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Finding the Fourth Proportional to 716.29, 988.48 and 417.61

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Solution

The fourth proportional to 716.29, 988.48 and 417.61 is: 576.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.29 : 988.48 = 417.61 : x
  2. Step 2: Convert to fraction form
    716.29/988.48 = 417.61/x
  3. Step 3: Cross multiply
    716.29x = 988.48 × 417.61
  4. Step 4: Simplify right side
    716.29x = 412,794.16
  5. Step 5: Solve for x
    x = 412,794.16/716.29
  6. Step 6: Final answer
    x = 576.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.