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Finding the Fourth Proportional to 632.32, 871.44 and 553.48

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Solution

The fourth proportional to 632.32, 871.44 and 553.48 is: 762.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.32 : 871.44 = 553.48 : x
  2. Step 2: Convert to fraction form
    632.32/871.44 = 553.48/x
  3. Step 3: Cross multiply
    632.32x = 871.44 × 553.48
  4. Step 4: Simplify right side
    632.32x = 482,324.61
  5. Step 5: Solve for x
    x = 482,324.61/632.32
  6. Step 6: Final answer
    x = 762.79

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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.