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Finding the Fourth Proportional to 1,104.61, 1,656.65 and 487.97

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Solution

The fourth proportional to 1,104.61, 1,656.65 and 487.97 is: 731.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.61 : 1,656.65 = 487.97 : x
  2. Step 2: Convert to fraction form
    1,104.61/1,656.65 = 487.97/x
  3. Step 3: Cross multiply
    1,104.61x = 1,656.65 × 487.97
  4. Step 4: Simplify right side
    1,104.61x = 808,403.97
  5. Step 5: Solve for x
    x = 808,403.97/1,104.61
  6. Step 6: Final answer
    x = 731.85

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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.