Home / 1,082.25-1,623.18-388.81

Finding the Fourth Proportional to 1,082.25, 1,623.18 and 388.81

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Solution

The fourth proportional to 1,082.25, 1,623.18 and 388.81 is: 583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.25 : 1,623.18 = 388.81 : x
  2. Step 2: Convert to fraction form
    1,082.25/1,623.18 = 388.81/x
  3. Step 3: Cross multiply
    1,082.25x = 1,623.18 × 388.81
  4. Step 4: Simplify right side
    1,082.25x = 631,106.67
  5. Step 5: Solve for x
    x = 631,106.67/1,082.25
  6. Step 6: Final answer
    x = 583.14

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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.