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Finding the Fourth Proportional to 176.68, 243.30 and 124.84

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Solution

The fourth proportional to 176.68, 243.30 and 124.84 is: 171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.68 : 243.30 = 124.84 : x
  2. Step 2: Convert to fraction form
    176.68/243.30 = 124.84/x
  3. Step 3: Cross multiply
    176.68x = 243.30 × 124.84
  4. Step 4: Simplify right side
    176.68x = 30,373.57
  5. Step 5: Solve for x
    x = 30,373.57/176.68
  6. Step 6: Final answer
    x = 171.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.