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Finding the Fourth Proportional to 582.80, 874.40 and 290.26

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Solution

The fourth proportional to 582.80, 874.40 and 290.26 is: 435.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.80 : 874.40 = 290.26 : x
  2. Step 2: Convert to fraction form
    582.80/874.40 = 290.26/x
  3. Step 3: Cross multiply
    582.80x = 874.40 × 290.26
  4. Step 4: Simplify right side
    582.80x = 253,803.34
  5. Step 5: Solve for x
    x = 253,803.34/582.80
  6. Step 6: Final answer
    x = 435.49

Related Problems

Find fourth proportional to 291.40, 437.20 and 145.13
Half scale
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Double scale
Find fourth proportional to 583.80, 875.90 and 291.26
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.