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Finding the Fourth Proportional to 963.64, 1,330.02 and 614.26

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Solution

The fourth proportional to 963.64, 1,330.02 and 614.26 is: 847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.64 : 1,330.02 = 614.26 : x
  2. Step 2: Convert to fraction form
    963.64/1,330.02 = 614.26/x
  3. Step 3: Cross multiply
    963.64x = 1,330.02 × 614.26
  4. Step 4: Simplify right side
    963.64x = 816,978.09
  5. Step 5: Solve for x
    x = 816,978.09/963.64
  6. Step 6: Final answer
    x = 847.80

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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.