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Finding the Fourth Proportional to 474.17, 710.29 and 217.85

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Solution

The fourth proportional to 474.17, 710.29 and 217.85 is: 326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.17 : 710.29 = 217.85 : x
  2. Step 2: Convert to fraction form
    474.17/710.29 = 217.85/x
  3. Step 3: Cross multiply
    474.17x = 710.29 × 217.85
  4. Step 4: Simplify right side
    474.17x = 154,736.68
  5. Step 5: Solve for x
    x = 154,736.68/474.17
  6. Step 6: Final answer
    x = 326.33

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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.