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Finding the Fourth Proportional to 731.01, 1,095.87 and 319.83

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Solution

The fourth proportional to 731.01, 1,095.87 and 319.83 is: 479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.01 : 1,095.87 = 319.83 : x
  2. Step 2: Convert to fraction form
    731.01/1,095.87 = 319.83/x
  3. Step 3: Cross multiply
    731.01x = 1,095.87 × 319.83
  4. Step 4: Simplify right side
    731.01x = 350,493.30
  5. Step 5: Solve for x
    x = 350,493.30/731.01
  6. Step 6: Final answer
    x = 479.47

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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.