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Finding the Fourth Proportional to 641.44, 962.06 and 179.17

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Solution

The fourth proportional to 641.44, 962.06 and 179.17 is: 268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.44 : 962.06 = 179.17 : x
  2. Step 2: Convert to fraction form
    641.44/962.06 = 179.17/x
  3. Step 3: Cross multiply
    641.44x = 962.06 × 179.17
  4. Step 4: Simplify right side
    641.44x = 172,369.44
  5. Step 5: Solve for x
    x = 172,369.44/641.44
  6. Step 6: Final answer
    x = 268.72

Related Problems

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Half scale
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Double scale
Find fourth proportional to 642.44, 963.56 and 180.17
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.