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Finding the Fourth Proportional to 508.60, 762.78 and 166.60

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Solution

The fourth proportional to 508.60, 762.78 and 166.60 is: 249.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.60 : 762.78 = 166.60 : x
  2. Step 2: Convert to fraction form
    508.60/762.78 = 166.60/x
  3. Step 3: Cross multiply
    508.60x = 762.78 × 166.60
  4. Step 4: Simplify right side
    508.60x = 127,079.15
  5. Step 5: Solve for x
    x = 127,079.15/508.60
  6. Step 6: Final answer
    x = 249.86

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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.