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Finding the Fourth Proportional to 975.81, 1,463.14 and 769.73

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Solution

The fourth proportional to 975.81, 1,463.14 and 769.73 is: 1,154.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.81 : 1,463.14 = 769.73 : x
  2. Step 2: Convert to fraction form
    975.81/1,463.14 = 769.73/x
  3. Step 3: Cross multiply
    975.81x = 1,463.14 × 769.73
  4. Step 4: Simplify right side
    975.81x = 1,126,218.90
  5. Step 5: Solve for x
    x = 1,126,218.90/975.81
  6. Step 6: Final answer
    x = 1,154.14

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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.