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Finding the Fourth Proportional to 641.79, 886.32 and 532.44

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Solution

The fourth proportional to 641.79, 886.32 and 532.44 is: 735.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.79 : 886.32 = 532.44 : x
  2. Step 2: Convert to fraction form
    641.79/886.32 = 532.44/x
  3. Step 3: Cross multiply
    641.79x = 886.32 × 532.44
  4. Step 4: Simplify right side
    641.79x = 471,912.22
  5. Step 5: Solve for x
    x = 471,912.22/641.79
  6. Step 6: Final answer
    x = 735.31

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1.5x scale

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.