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Finding the Fourth Proportional to 627.20, 864.79 and 532.49

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Solution

The fourth proportional to 627.20, 864.79 and 532.49 is: 734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.20 : 864.79 = 532.49 : x
  2. Step 2: Convert to fraction form
    627.20/864.79 = 532.49/x
  3. Step 3: Cross multiply
    627.20x = 864.79 × 532.49
  4. Step 4: Simplify right side
    627.20x = 460,492.03
  5. Step 5: Solve for x
    x = 460,492.03/627.20
  6. Step 6: Final answer
    x = 734.20

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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.