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Finding the Fourth Proportional to 126.27, 188.40 and 124.65

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Solution

The fourth proportional to 126.27, 188.40 and 124.65 is: 185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.27 : 188.40 = 124.65 : x
  2. Step 2: Convert to fraction form
    126.27/188.40 = 124.65/x
  3. Step 3: Cross multiply
    126.27x = 188.40 × 124.65
  4. Step 4: Simplify right side
    126.27x = 23,484.06
  5. Step 5: Solve for x
    x = 23,484.06/126.27
  6. Step 6: Final answer
    x = 185.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.