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Finding the Fourth Proportional to 1,494.28, 2,238.90 and 1,059.28

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Solution

The fourth proportional to 1,494.28, 2,238.90 and 1,059.28 is: 1,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.28 : 2,238.90 = 1,059.28 : x
  2. Step 2: Convert to fraction form
    1,494.28/2,238.90 = 1,059.28/x
  3. Step 3: Cross multiply
    1,494.28x = 2,238.90 × 1,059.28
  4. Step 4: Simplify right side
    1,494.28x = 2,371,621.99
  5. Step 5: Solve for x
    x = 2,371,621.99/1,494.28
  6. Step 6: Final answer
    x = 1,587.13

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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.