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Finding the Fourth Proportional to 472.98, 708.85 and 229.17

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Solution

The fourth proportional to 472.98, 708.85 and 229.17 is: 343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.98 : 708.85 = 229.17 : x
  2. Step 2: Convert to fraction form
    472.98/708.85 = 229.17/x
  3. Step 3: Cross multiply
    472.98x = 708.85 × 229.17
  4. Step 4: Simplify right side
    472.98x = 162,447.15
  5. Step 5: Solve for x
    x = 162,447.15/472.98
  6. Step 6: Final answer
    x = 343.45

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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.