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Finding the Fourth Proportional to 887.03, 1,330.10 and 516.96

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Solution

The fourth proportional to 887.03, 1,330.10 and 516.96 is: 775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.03 : 1,330.10 = 516.96 : x
  2. Step 2: Convert to fraction form
    887.03/1,330.10 = 516.96/x
  3. Step 3: Cross multiply
    887.03x = 1,330.10 × 516.96
  4. Step 4: Simplify right side
    887.03x = 687,608.50
  5. Step 5: Solve for x
    x = 687,608.50/887.03
  6. Step 6: Final answer
    x = 775.18

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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.