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Finding the Fourth Proportional to 491.67, 737.50 and 126.49

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Solution

The fourth proportional to 491.67, 737.50 and 126.49 is: 189.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.67 : 737.50 = 126.49 : x
  2. Step 2: Convert to fraction form
    491.67/737.50 = 126.49/x
  3. Step 3: Cross multiply
    491.67x = 737.50 × 126.49
  4. Step 4: Simplify right side
    491.67x = 93,286.38
  5. Step 5: Solve for x
    x = 93,286.38/491.67
  6. Step 6: Final answer
    x = 189.73

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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.