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Finding the Fourth Proportional to 628.87, 868.67 and 524.30

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Solution

The fourth proportional to 628.87, 868.67 and 524.30 is: 724.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.87 : 868.67 = 524.30 : x
  2. Step 2: Convert to fraction form
    628.87/868.67 = 524.30/x
  3. Step 3: Cross multiply
    628.87x = 868.67 × 524.30
  4. Step 4: Simplify right side
    628.87x = 455,436.72
  5. Step 5: Solve for x
    x = 455,436.72/628.87
  6. Step 6: Final answer
    x = 724.22

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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.