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Finding the Fourth Proportional to 1,013.81, 1,520.72 and 244.31

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Solution

The fourth proportional to 1,013.81, 1,520.72 and 244.31 is: 366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.81 : 1,520.72 = 244.31 : x
  2. Step 2: Convert to fraction form
    1,013.81/1,520.72 = 244.31/x
  3. Step 3: Cross multiply
    1,013.81x = 1,520.72 × 244.31
  4. Step 4: Simplify right side
    1,013.81x = 371,530.60
  5. Step 5: Solve for x
    x = 371,530.60/1,013.81
  6. Step 6: Final answer
    x = 366.47

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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.