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Finding the Fourth Proportional to 851.98, 1,175.48 and 516.04

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Solution

The fourth proportional to 851.98, 1,175.48 and 516.04 is: 711.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    851.98 : 1,175.48 = 516.04 : x
  2. Step 2: Convert to fraction form
    851.98/1,175.48 = 516.04/x
  3. Step 3: Cross multiply
    851.98x = 1,175.48 × 516.04
  4. Step 4: Simplify right side
    851.98x = 606,594.70
  5. Step 5: Solve for x
    x = 606,594.70/851.98
  6. Step 6: Final answer
    x = 711.98

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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.