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Finding the Fourth Proportional to 641.35, 961.87 and 179.14

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Solution

The fourth proportional to 641.35, 961.87 and 179.14 is: 268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.35 : 961.87 = 179.14 : x
  2. Step 2: Convert to fraction form
    641.35/961.87 = 179.14/x
  3. Step 3: Cross multiply
    641.35x = 961.87 × 179.14
  4. Step 4: Simplify right side
    641.35x = 172,310.15
  5. Step 5: Solve for x
    x = 172,310.15/641.35
  6. Step 6: Final answer
    x = 268.67

Related Problems

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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.