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Finding the Fourth Proportional to 1,040.52, 1,561.13 and 695.24

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Solution

The fourth proportional to 1,040.52, 1,561.13 and 695.24 is: 1,043.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.52 : 1,561.13 = 695.24 : x
  2. Step 2: Convert to fraction form
    1,040.52/1,561.13 = 695.24/x
  3. Step 3: Cross multiply
    1,040.52x = 1,561.13 × 695.24
  4. Step 4: Simplify right side
    1,040.52x = 1,085,360.02
  5. Step 5: Solve for x
    x = 1,085,360.02/1,040.52
  6. Step 6: Final answer
    x = 1,043.09

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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.