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Finding the Fourth Proportional to 963.27, 1,445.16 and 810.80

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Solution

The fourth proportional to 963.27, 1,445.16 and 810.80 is: 1,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.27 : 1,445.16 = 810.80 : x
  2. Step 2: Convert to fraction form
    963.27/1,445.16 = 810.80/x
  3. Step 3: Cross multiply
    963.27x = 1,445.16 × 810.80
  4. Step 4: Simplify right side
    963.27x = 1,171,728.50
  5. Step 5: Solve for x
    x = 1,171,728.50/963.27
  6. Step 6: Final answer
    x = 1,216.41

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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.