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Finding the Fourth Proportional to 790.48, 1,090.88 and 441.19

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Solution

The fourth proportional to 790.48, 1,090.88 and 441.19 is: 608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.48 : 1,090.88 = 441.19 : x
  2. Step 2: Convert to fraction form
    790.48/1,090.88 = 441.19/x
  3. Step 3: Cross multiply
    790.48x = 1,090.88 × 441.19
  4. Step 4: Simplify right side
    790.48x = 481,285.35
  5. Step 5: Solve for x
    x = 481,285.35/790.48
  6. Step 6: Final answer
    x = 608.85

Related Problems

Find fourth proportional to 395.24, 545.44 and 220.60
Half scale
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Double scale
Find fourth proportional to 791.48, 1,092.26 and 442.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.