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Finding the Fourth Proportional to 966.24, 1,333.59 and 617.13

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Solution

The fourth proportional to 966.24, 1,333.59 and 617.13 is: 851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.24 : 1,333.59 = 617.13 : x
  2. Step 2: Convert to fraction form
    966.24/1,333.59 = 617.13/x
  3. Step 3: Cross multiply
    966.24x = 1,333.59 × 617.13
  4. Step 4: Simplify right side
    966.24x = 822,998.40
  5. Step 5: Solve for x
    x = 822,998.40/966.24
  6. Step 6: Final answer
    x = 851.75

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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.