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Finding the Fourth Proportional to 974.25, 1,344.47 and 560.25

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Solution

The fourth proportional to 974.25, 1,344.47 and 560.25 is: 773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.25 : 1,344.47 = 560.25 : x
  2. Step 2: Convert to fraction form
    974.25/1,344.47 = 560.25/x
  3. Step 3: Cross multiply
    974.25x = 1,344.47 × 560.25
  4. Step 4: Simplify right side
    974.25x = 753,236.52
  5. Step 5: Solve for x
    x = 753,236.52/974.25
  6. Step 6: Final answer
    x = 773.15

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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.