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Finding the Fourth Proportional to 731.45, 1,097.17 and 292.89

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Solution

The fourth proportional to 731.45, 1,097.17 and 292.89 is: 439.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.45 : 1,097.17 = 292.89 : x
  2. Step 2: Convert to fraction form
    731.45/1,097.17 = 292.89/x
  3. Step 3: Cross multiply
    731.45x = 1,097.17 × 292.89
  4. Step 4: Simplify right side
    731.45x = 321,353.50
  5. Step 5: Solve for x
    x = 321,353.50/731.45
  6. Step 6: Final answer
    x = 439.34

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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.