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Finding the Fourth Proportional to 641.49, 962.25 and 179.31

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Solution

The fourth proportional to 641.49, 962.25 and 179.31 is: 268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.49 : 962.25 = 179.31 : x
  2. Step 2: Convert to fraction form
    641.49/962.25 = 179.31/x
  3. Step 3: Cross multiply
    641.49x = 962.25 × 179.31
  4. Step 4: Simplify right side
    641.49x = 172,541.05
  5. Step 5: Solve for x
    x = 172,541.05/641.49
  6. Step 6: Final answer
    x = 268.97

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Double scale
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Similar ratio
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1.5x scale

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.