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Finding the Fourth Proportional to 1,255.03, 1,731.72 and 1,068.28

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Solution

The fourth proportional to 1,255.03, 1,731.72 and 1,068.28 is: 1,474.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.03 : 1,731.72 = 1,068.28 : x
  2. Step 2: Convert to fraction form
    1,255.03/1,731.72 = 1,068.28/x
  3. Step 3: Cross multiply
    1,255.03x = 1,731.72 × 1,068.28
  4. Step 4: Simplify right side
    1,255.03x = 1,849,961.84
  5. Step 5: Solve for x
    x = 1,849,961.84/1,255.03
  6. Step 6: Final answer
    x = 1,474.04

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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.