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Finding the Fourth Proportional to 845.24, 1,166.40 and 491.19

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Solution

The fourth proportional to 845.24, 1,166.40 and 491.19 is: 677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.24 : 1,166.40 = 491.19 : x
  2. Step 2: Convert to fraction form
    845.24/1,166.40 = 491.19/x
  3. Step 3: Cross multiply
    845.24x = 1,166.40 × 491.19
  4. Step 4: Simplify right side
    845.24x = 572,924.02
  5. Step 5: Solve for x
    x = 572,924.02/845.24
  6. Step 6: Final answer
    x = 677.83

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Double scale
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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.