Home / 1,082.29-1,623.25-388.85

Finding the Fourth Proportional to 1,082.29, 1,623.25 and 388.85

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Solution

The fourth proportional to 1,082.29, 1,623.25 and 388.85 is: 583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.29 : 1,623.25 = 388.85 : x
  2. Step 2: Convert to fraction form
    1,082.29/1,623.25 = 388.85/x
  3. Step 3: Cross multiply
    1,082.29x = 1,623.25 × 388.85
  4. Step 4: Simplify right side
    1,082.29x = 631,200.76
  5. Step 5: Solve for x
    x = 631,200.76/1,082.29
  6. Step 6: Final answer
    x = 583.21

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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.