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Finding the Fourth Proportional to 961.20, 1,441.06 and 652.24

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Solution

The fourth proportional to 961.20, 1,441.06 and 652.24 is: 977.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.20 : 1,441.06 = 652.24 : x
  2. Step 2: Convert to fraction form
    961.20/1,441.06 = 652.24/x
  3. Step 3: Cross multiply
    961.20x = 1,441.06 × 652.24
  4. Step 4: Simplify right side
    961.20x = 939,916.97
  5. Step 5: Solve for x
    x = 939,916.97/961.20
  6. Step 6: Final answer
    x = 977.86

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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.