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Finding the Fourth Proportional to 628.66, 942.99 and 166.48

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Solution

The fourth proportional to 628.66, 942.99 and 166.48 is: 249.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.66 : 942.99 = 166.48 : x
  2. Step 2: Convert to fraction form
    628.66/942.99 = 166.48/x
  3. Step 3: Cross multiply
    628.66x = 942.99 × 166.48
  4. Step 4: Simplify right side
    628.66x = 156,988.98
  5. Step 5: Solve for x
    x = 156,988.98/628.66
  6. Step 6: Final answer
    x = 249.72

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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.