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Finding the Fourth Proportional to 487.67, 731.13 and 162.86

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Solution

The fourth proportional to 487.67, 731.13 and 162.86 is: 244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.67 : 731.13 = 162.86 : x
  2. Step 2: Convert to fraction form
    487.67/731.13 = 162.86/x
  3. Step 3: Cross multiply
    487.67x = 731.13 × 162.86
  4. Step 4: Simplify right side
    487.67x = 119,071.83
  5. Step 5: Solve for x
    x = 119,071.83/487.67
  6. Step 6: Final answer
    x = 244.16

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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.