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Finding the Fourth Proportional to 1,082.68, 1,623.20 and 504.88

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Solution

The fourth proportional to 1,082.68, 1,623.20 and 504.88 is: 756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.68 : 1,623.20 = 504.88 : x
  2. Step 2: Convert to fraction form
    1,082.68/1,623.20 = 504.88/x
  3. Step 3: Cross multiply
    1,082.68x = 1,623.20 × 504.88
  4. Step 4: Simplify right side
    1,082.68x = 819,521.22
  5. Step 5: Solve for x
    x = 819,521.22/1,082.68
  6. Step 6: Final answer
    x = 756.94

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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.