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Finding the Fourth Proportional to 963.18, 1,439.49 and 703.73

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Solution

The fourth proportional to 963.18, 1,439.49 and 703.73 is: 1,051.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.18 : 1,439.49 = 703.73 : x
  2. Step 2: Convert to fraction form
    963.18/1,439.49 = 703.73/x
  3. Step 3: Cross multiply
    963.18x = 1,439.49 × 703.73
  4. Step 4: Simplify right side
    963.18x = 1,013,005.10
  5. Step 5: Solve for x
    x = 1,013,005.10/963.18
  6. Step 6: Final answer
    x = 1,051.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.