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Finding the Fourth Proportional to 1,344.28, 2,015.52 and 1,015

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Solution

The fourth proportional to 1,344.28, 2,015.52 and 1,015 is: 1,521.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.28 : 2,015.52 = 1,015 : x
  2. Step 2: Convert to fraction form
    1,344.28/2,015.52 = 1,015/x
  3. Step 3: Cross multiply
    1,344.28x = 2,015.52 × 1,015
  4. Step 4: Simplify right side
    1,344.28x = 2,045,752.80
  5. Step 5: Solve for x
    x = 2,045,752.80/1,344.28
  6. Step 6: Final answer
    x = 1,521.82

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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.