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Finding the Fourth Proportional to 1,015.70, 1,522.33 and 494.92

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Solution

The fourth proportional to 1,015.70, 1,522.33 and 494.92 is: 741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.70 : 1,522.33 = 494.92 : x
  2. Step 2: Convert to fraction form
    1,015.70/1,522.33 = 494.92/x
  3. Step 3: Cross multiply
    1,015.70x = 1,522.33 × 494.92
  4. Step 4: Simplify right side
    1,015.70x = 753,429.09
  5. Step 5: Solve for x
    x = 753,429.09/1,015.70
  6. Step 6: Final answer
    x = 741.78

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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.