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Finding the Fourth Proportional to 1,254.96, 1,732.70 and 783.04

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Solution

The fourth proportional to 1,254.96, 1,732.70 and 783.04 is: 1,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.96 : 1,732.70 = 783.04 : x
  2. Step 2: Convert to fraction form
    1,254.96/1,732.70 = 783.04/x
  3. Step 3: Cross multiply
    1,254.96x = 1,732.70 × 783.04
  4. Step 4: Simplify right side
    1,254.96x = 1,356,773.41
  5. Step 5: Solve for x
    x = 1,356,773.41/1,254.96
  6. Step 6: Final answer
    x = 1,081.13

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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.