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Finding the Fourth Proportional to 374.11, 516.41 and 314.95

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Solution

The fourth proportional to 374.11, 516.41 and 314.95 is: 434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.11 : 516.41 = 314.95 : x
  2. Step 2: Convert to fraction form
    374.11/516.41 = 314.95/x
  3. Step 3: Cross multiply
    374.11x = 516.41 × 314.95
  4. Step 4: Simplify right side
    374.11x = 162,641.75
  5. Step 5: Solve for x
    x = 162,641.75/374.11
  6. Step 6: Final answer
    x = 434.74

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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.