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Finding the Fourth Proportional to 963.65, 1,445.67 and 616.83

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Solution

The fourth proportional to 963.65, 1,445.67 and 616.83 is: 925.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.65 : 1,445.67 = 616.83 : x
  2. Step 2: Convert to fraction form
    963.65/1,445.67 = 616.83/x
  3. Step 3: Cross multiply
    963.65x = 1,445.67 × 616.83
  4. Step 4: Simplify right side
    963.65x = 891,732.63
  5. Step 5: Solve for x
    x = 891,732.63/963.65
  6. Step 6: Final answer
    x = 925.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.