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Finding the Fourth Proportional to 1,244.85, 1,717.25 and 803.00

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Solution

The fourth proportional to 1,244.85, 1,717.25 and 803.00 is: 1,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.85 : 1,717.25 = 803.00 : x
  2. Step 2: Convert to fraction form
    1,244.85/1,717.25 = 803.00/x
  3. Step 3: Cross multiply
    1,244.85x = 1,717.25 × 803.00
  4. Step 4: Simplify right side
    1,244.85x = 1,378,939.15
  5. Step 5: Solve for x
    x = 1,378,939.15/1,244.85
  6. Step 6: Final answer
    x = 1,107.72

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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.