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Finding the Fourth Proportional to 961.62, 1,327.06 and 541.99

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Solution

The fourth proportional to 961.62, 1,327.06 and 541.99 is: 747.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.62 : 1,327.06 = 541.99 : x
  2. Step 2: Convert to fraction form
    961.62/1,327.06 = 541.99/x
  3. Step 3: Cross multiply
    961.62x = 1,327.06 × 541.99
  4. Step 4: Simplify right side
    961.62x = 719,248.58
  5. Step 5: Solve for x
    x = 719,248.58/961.62
  6. Step 6: Final answer
    x = 747.96

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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.