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Finding the Fourth Proportional to 1,013.91, 1,520.91 and 364.68

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Solution

The fourth proportional to 1,013.91, 1,520.91 and 364.68 is: 547.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.91 : 1,520.91 = 364.68 : x
  2. Step 2: Convert to fraction form
    1,013.91/1,520.91 = 364.68/x
  3. Step 3: Cross multiply
    1,013.91x = 1,520.91 × 364.68
  4. Step 4: Simplify right side
    1,013.91x = 554,645.46
  5. Step 5: Solve for x
    x = 554,645.46/1,013.91
  6. Step 6: Final answer
    x = 547.04

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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.