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Finding the Fourth Proportional to 534.28, 737.20 and 313.19

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Solution

The fourth proportional to 534.28, 737.20 and 313.19 is: 432.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.28 : 737.20 = 313.19 : x
  2. Step 2: Convert to fraction form
    534.28/737.20 = 313.19/x
  3. Step 3: Cross multiply
    534.28x = 737.20 × 313.19
  4. Step 4: Simplify right side
    534.28x = 230,882.10
  5. Step 5: Solve for x
    x = 230,882.10/534.28
  6. Step 6: Final answer
    x = 432.14

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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.