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Finding the Fourth Proportional to 961.82, 1,442.91 and 474.62

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Solution

The fourth proportional to 961.82, 1,442.91 and 474.62 is: 712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.82 : 1,442.91 = 474.62 : x
  2. Step 2: Convert to fraction form
    961.82/1,442.91 = 474.62/x
  3. Step 3: Cross multiply
    961.82x = 1,442.91 × 474.62
  4. Step 4: Simplify right side
    961.82x = 684,833.94
  5. Step 5: Solve for x
    x = 684,833.94/961.82
  6. Step 6: Final answer
    x = 712.02

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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.