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Finding the Fourth Proportional to 963.64, 1,329.82 and 543.99

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Solution

The fourth proportional to 963.64, 1,329.82 and 543.99 is: 750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.64 : 1,329.82 = 543.99 : x
  2. Step 2: Convert to fraction form
    963.64/1,329.82 = 543.99/x
  3. Step 3: Cross multiply
    963.64x = 1,329.82 × 543.99
  4. Step 4: Simplify right side
    963.64x = 723,408.78
  5. Step 5: Solve for x
    x = 723,408.78/963.64
  6. Step 6: Final answer
    x = 750.70

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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.