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Finding the Fourth Proportional to 774.18, 1,067.04 and 525.42

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Solution

The fourth proportional to 774.18, 1,067.04 and 525.42 is: 724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.18 : 1,067.04 = 525.42 : x
  2. Step 2: Convert to fraction form
    774.18/1,067.04 = 525.42/x
  3. Step 3: Cross multiply
    774.18x = 1,067.04 × 525.42
  4. Step 4: Simplify right side
    774.18x = 560,644.16
  5. Step 5: Solve for x
    x = 560,644.16/774.18
  6. Step 6: Final answer
    x = 724.18

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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.