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Finding the Fourth Proportional to 472.13, 706.52 and 398.82

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Solution

The fourth proportional to 472.13, 706.52 and 398.82 is: 596.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.13 : 706.52 = 398.82 : x
  2. Step 2: Convert to fraction form
    472.13/706.52 = 398.82/x
  3. Step 3: Cross multiply
    472.13x = 706.52 × 398.82
  4. Step 4: Simplify right side
    472.13x = 281,777.95
  5. Step 5: Solve for x
    x = 281,777.95/472.13
  6. Step 6: Final answer
    x = 596.82

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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.