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Finding the Fourth Proportional to 961.29, 1,326.18 and 587.97

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Solution

The fourth proportional to 961.29, 1,326.18 and 587.97 is: 811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.29 : 1,326.18 = 587.97 : x
  2. Step 2: Convert to fraction form
    961.29/1,326.18 = 587.97/x
  3. Step 3: Cross multiply
    961.29x = 1,326.18 × 587.97
  4. Step 4: Simplify right side
    961.29x = 779,754.05
  5. Step 5: Solve for x
    x = 779,754.05/961.29
  6. Step 6: Final answer
    x = 811.15

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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.