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Finding the Fourth Proportional to 824.92, 1,237.50 and 247.72

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Solution

The fourth proportional to 824.92, 1,237.50 and 247.72 is: 371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.92 : 1,237.50 = 247.72 : x
  2. Step 2: Convert to fraction form
    824.92/1,237.50 = 247.72/x
  3. Step 3: Cross multiply
    824.92x = 1,237.50 × 247.72
  4. Step 4: Simplify right side
    824.92x = 306,553.50
  5. Step 5: Solve for x
    x = 306,553.50/824.92
  6. Step 6: Final answer
    x = 371.62

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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.