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Finding the Fourth Proportional to 966.40, 1,451.28 and 527.44

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Solution

The fourth proportional to 966.40, 1,451.28 and 527.44 is: 792.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.40 : 1,451.28 = 527.44 : x
  2. Step 2: Convert to fraction form
    966.40/1,451.28 = 527.44/x
  3. Step 3: Cross multiply
    966.40x = 1,451.28 × 527.44
  4. Step 4: Simplify right side
    966.40x = 765,463.12
  5. Step 5: Solve for x
    x = 765,463.12/966.40
  6. Step 6: Final answer
    x = 792.08

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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.