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Finding the Fourth Proportional to 247.47, 370.85 and 193.47

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Solution

The fourth proportional to 247.47, 370.85 and 193.47 is: 289.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.47 : 370.85 = 193.47 : x
  2. Step 2: Convert to fraction form
    247.47/370.85 = 193.47/x
  3. Step 3: Cross multiply
    247.47x = 370.85 × 193.47
  4. Step 4: Simplify right side
    247.47x = 71,747.38
  5. Step 5: Solve for x
    x = 71,747.38/247.47
  6. Step 6: Final answer
    x = 289.92

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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.