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Finding the Fourth Proportional to 374.05, 516.36 and 243.15

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Solution

The fourth proportional to 374.05, 516.36 and 243.15 is: 335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.05 : 516.36 = 243.15 : x
  2. Step 2: Convert to fraction form
    374.05/516.36 = 243.15/x
  3. Step 3: Cross multiply
    374.05x = 516.36 × 243.15
  4. Step 4: Simplify right side
    374.05x = 125,552.93
  5. Step 5: Solve for x
    x = 125,552.93/374.05
  6. Step 6: Final answer
    x = 335.66

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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.