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Finding the Fourth Proportional to 731.50, 1,097.52 and 346.78

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Solution

The fourth proportional to 731.50, 1,097.52 and 346.78 is: 520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.50 : 1,097.52 = 346.78 : x
  2. Step 2: Convert to fraction form
    731.50/1,097.52 = 346.78/x
  3. Step 3: Cross multiply
    731.50x = 1,097.52 × 346.78
  4. Step 4: Simplify right side
    731.50x = 380,597.99
  5. Step 5: Solve for x
    x = 380,597.99/731.50
  6. Step 6: Final answer
    x = 520.30

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Double scale
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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.