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Finding the Fourth Proportional to 1,295.80, 1,932.42 and 1,223.01

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Solution

The fourth proportional to 1,295.80, 1,932.42 and 1,223.01 is: 1,823.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.80 : 1,932.42 = 1,223.01 : x
  2. Step 2: Convert to fraction form
    1,295.80/1,932.42 = 1,223.01/x
  3. Step 3: Cross multiply
    1,295.80x = 1,932.42 × 1,223.01
  4. Step 4: Simplify right side
    1,295.80x = 2,363,371.13
  5. Step 5: Solve for x
    x = 2,363,371.13/1,295.80
  6. Step 6: Final answer
    x = 1,823.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.