Home / 1,082.45-1,623.72-342.15

Finding the Fourth Proportional to 1,082.45, 1,623.72 and 342.15

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Solution

The fourth proportional to 1,082.45, 1,623.72 and 342.15 is: 513.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.45 : 1,623.72 = 342.15 : x
  2. Step 2: Convert to fraction form
    1,082.45/1,623.72 = 342.15/x
  3. Step 3: Cross multiply
    1,082.45x = 1,623.72 × 342.15
  4. Step 4: Simplify right side
    1,082.45x = 555,555.80
  5. Step 5: Solve for x
    x = 555,555.80/1,082.45
  6. Step 6: Final answer
    x = 513.24

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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.