Home / 1,125.24-1,552.80-627.92

Finding the Fourth Proportional to 1,125.24, 1,552.80 and 627.92

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Solution

The fourth proportional to 1,125.24, 1,552.80 and 627.92 is: 866.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.24 : 1,552.80 = 627.92 : x
  2. Step 2: Convert to fraction form
    1,125.24/1,552.80 = 627.92/x
  3. Step 3: Cross multiply
    1,125.24x = 1,552.80 × 627.92
  4. Step 4: Simplify right side
    1,125.24x = 975,034.18
  5. Step 5: Solve for x
    x = 975,034.18/1,125.24
  6. Step 6: Final answer
    x = 866.51

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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.