Home / 1,122.61-1,549.20-625.27

Finding the Fourth Proportional to 1,122.61, 1,549.20 and 625.27

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Solution

The fourth proportional to 1,122.61, 1,549.20 and 625.27 is: 862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.61 : 1,549.20 = 625.27 : x
  2. Step 2: Convert to fraction form
    1,122.61/1,549.20 = 625.27/x
  3. Step 3: Cross multiply
    1,122.61x = 1,549.20 × 625.27
  4. Step 4: Simplify right side
    1,122.61x = 968,668.28
  5. Step 5: Solve for x
    x = 968,668.28/1,122.61
  6. Step 6: Final answer
    x = 862.87

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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.