Home / 1,082.49-1,623.43-389.08

Finding the Fourth Proportional to 1,082.49, 1,623.43 and 389.08

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Solution

The fourth proportional to 1,082.49, 1,623.43 and 389.08 is: 583.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.49 : 1,623.43 = 389.08 : x
  2. Step 2: Convert to fraction form
    1,082.49/1,623.43 = 389.08/x
  3. Step 3: Cross multiply
    1,082.49x = 1,623.43 × 389.08
  4. Step 4: Simplify right side
    1,082.49x = 631,644.14
  5. Step 5: Solve for x
    x = 631,644.14/1,082.49
  6. Step 6: Final answer
    x = 583.51

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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.