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Finding the Fourth Proportional to 956.03, 1,431.87 and 516.51

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Solution

The fourth proportional to 956.03, 1,431.87 and 516.51 is: 773.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.03 : 1,431.87 = 516.51 : x
  2. Step 2: Convert to fraction form
    956.03/1,431.87 = 516.51/x
  3. Step 3: Cross multiply
    956.03x = 1,431.87 × 516.51
  4. Step 4: Simplify right side
    956.03x = 739,575.17
  5. Step 5: Solve for x
    x = 739,575.17/956.03
  6. Step 6: Final answer
    x = 773.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.