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Finding the Fourth Proportional to 963.15, 1,329.14 and 564.73

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Solution

The fourth proportional to 963.15, 1,329.14 and 564.73 is: 779.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.15 : 1,329.14 = 564.73 : x
  2. Step 2: Convert to fraction form
    963.15/1,329.14 = 564.73/x
  3. Step 3: Cross multiply
    963.15x = 1,329.14 × 564.73
  4. Step 4: Simplify right side
    963.15x = 750,598.59
  5. Step 5: Solve for x
    x = 750,598.59/963.15
  6. Step 6: Final answer
    x = 779.32

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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.