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Finding the Fourth Proportional to 491.80, 737.80 and 167.16

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Solution

The fourth proportional to 491.80, 737.80 and 167.16 is: 250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.80 : 737.80 = 167.16 : x
  2. Step 2: Convert to fraction form
    491.80/737.80 = 167.16/x
  3. Step 3: Cross multiply
    491.80x = 737.80 × 167.16
  4. Step 4: Simplify right side
    491.80x = 123,330.86
  5. Step 5: Solve for x
    x = 123,330.86/491.80
  6. Step 6: Final answer
    x = 250.78

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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.