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Finding the Fourth Proportional to 1,489.94, 2,235.16 and 502.85

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Solution

The fourth proportional to 1,489.94, 2,235.16 and 502.85 is: 754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.94 : 2,235.16 = 502.85 : x
  2. Step 2: Convert to fraction form
    1,489.94/2,235.16 = 502.85/x
  3. Step 3: Cross multiply
    1,489.94x = 2,235.16 × 502.85
  4. Step 4: Simplify right side
    1,489.94x = 1,123,954.54
  5. Step 5: Solve for x
    x = 1,123,954.54/1,489.94
  6. Step 6: Final answer
    x = 754.36

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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.