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Finding the Fourth Proportional to 374.63, 517.03 and 243.91

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Solution

The fourth proportional to 374.63, 517.03 and 243.91 is: 336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.63 : 517.03 = 243.91 : x
  2. Step 2: Convert to fraction form
    374.63/517.03 = 243.91/x
  3. Step 3: Cross multiply
    374.63x = 517.03 × 243.91
  4. Step 4: Simplify right side
    374.63x = 126,110.20
  5. Step 5: Solve for x
    x = 126,110.20/374.63
  6. Step 6: Final answer
    x = 336.63

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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.