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Finding the Fourth Proportional to 373.22, 516.39 and 314.90

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Solution

The fourth proportional to 373.22, 516.39 and 314.90 is: 435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.22 : 516.39 = 314.90 : x
  2. Step 2: Convert to fraction form
    373.22/516.39 = 314.90/x
  3. Step 3: Cross multiply
    373.22x = 516.39 × 314.90
  4. Step 4: Simplify right side
    373.22x = 162,611.21
  5. Step 5: Solve for x
    x = 162,611.21/373.22
  6. Step 6: Final answer
    x = 435.70

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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.