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Finding the Fourth Proportional to 1,078.49, 1,494.80 and 1,060.87

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Solution

The fourth proportional to 1,078.49, 1,494.80 and 1,060.87 is: 1,470.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.49 : 1,494.80 = 1,060.87 : x
  2. Step 2: Convert to fraction form
    1,078.49/1,494.80 = 1,060.87/x
  3. Step 3: Cross multiply
    1,078.49x = 1,494.80 × 1,060.87
  4. Step 4: Simplify right side
    1,078.49x = 1,585,788.48
  5. Step 5: Solve for x
    x = 1,585,788.48/1,078.49
  6. Step 6: Final answer
    x = 1,470.38

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.