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Finding the Fourth Proportional to 631.68, 943.26 and 516.35

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Solution

The fourth proportional to 631.68, 943.26 and 516.35 is: 771.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.68 : 943.26 = 516.35 : x
  2. Step 2: Convert to fraction form
    631.68/943.26 = 516.35/x
  3. Step 3: Cross multiply
    631.68x = 943.26 × 516.35
  4. Step 4: Simplify right side
    631.68x = 487,052.72
  5. Step 5: Solve for x
    x = 487,052.72/631.68
  6. Step 6: Final answer
    x = 771.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.