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Finding the Fourth Proportional to 374.10, 516.47 and 243.35

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Solution

The fourth proportional to 374.10, 516.47 and 243.35 is: 335.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.10 : 516.47 = 243.35 : x
  2. Step 2: Convert to fraction form
    374.10/516.47 = 243.35/x
  3. Step 3: Cross multiply
    374.10x = 516.47 × 243.35
  4. Step 4: Simplify right side
    374.10x = 125,682.97
  5. Step 5: Solve for x
    x = 125,682.97/374.10
  6. Step 6: Final answer
    x = 335.96

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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.