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Finding the Fourth Proportional to 374.54, 517.10 and 243.92

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Solution

The fourth proportional to 374.54, 517.10 and 243.92 is: 336.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.54 : 517.10 = 243.92 : x
  2. Step 2: Convert to fraction form
    374.54/517.10 = 243.92/x
  3. Step 3: Cross multiply
    374.54x = 517.10 × 243.92
  4. Step 4: Simplify right side
    374.54x = 126,127.23
  5. Step 5: Solve for x
    x = 126,127.23/374.54
  6. Step 6: Final answer
    x = 336.76

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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.