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Finding the Fourth Proportional to 1,489.82, 2,235.28 and 998.24

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Solution

The fourth proportional to 1,489.82, 2,235.28 and 998.24 is: 1,497.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.82 : 2,235.28 = 998.24 : x
  2. Step 2: Convert to fraction form
    1,489.82/2,235.28 = 998.24/x
  3. Step 3: Cross multiply
    1,489.82x = 2,235.28 × 998.24
  4. Step 4: Simplify right side
    1,489.82x = 2,231,345.91
  5. Step 5: Solve for x
    x = 2,231,345.91/1,489.82
  6. Step 6: Final answer
    x = 1,497.73

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1.5x scale

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.