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Finding the Fourth Proportional to 1,061.19, 1,463.13 and 766.35

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Solution

The fourth proportional to 1,061.19, 1,463.13 and 766.35 is: 1,056.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.19 : 1,463.13 = 766.35 : x
  2. Step 2: Convert to fraction form
    1,061.19/1,463.13 = 766.35/x
  3. Step 3: Cross multiply
    1,061.19x = 1,463.13 × 766.35
  4. Step 4: Simplify right side
    1,061.19x = 1,121,269.68
  5. Step 5: Solve for x
    x = 1,121,269.68/1,061.19
  6. Step 6: Final answer
    x = 1,056.62

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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.