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Finding the Fourth Proportional to 213.27, 294.30 and 124.76

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Solution

The fourth proportional to 213.27, 294.30 and 124.76 is: 172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.27 : 294.30 = 124.76 : x
  2. Step 2: Convert to fraction form
    213.27/294.30 = 124.76/x
  3. Step 3: Cross multiply
    213.27x = 294.30 × 124.76
  4. Step 4: Simplify right side
    213.27x = 36,715.40
  5. Step 5: Solve for x
    x = 36,715.40/213.27
  6. Step 6: Final answer
    x = 172.15

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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.