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Finding the Fourth Proportional to 1,082.74, 1,493.72 and 662.93

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Solution

The fourth proportional to 1,082.74, 1,493.72 and 662.93 is: 914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.74 : 1,493.72 = 662.93 : x
  2. Step 2: Convert to fraction form
    1,082.74/1,493.72 = 662.93/x
  3. Step 3: Cross multiply
    1,082.74x = 1,493.72 × 662.93
  4. Step 4: Simplify right side
    1,082.74x = 990,235.64
  5. Step 5: Solve for x
    x = 990,235.64/1,082.74
  6. Step 6: Final answer
    x = 914.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.