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Finding the Fourth Proportional to 1,306.67, 1,960.11 and 332.77

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Solution

The fourth proportional to 1,306.67, 1,960.11 and 332.77 is: 499.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.67 : 1,960.11 = 332.77 : x
  2. Step 2: Convert to fraction form
    1,306.67/1,960.11 = 332.77/x
  3. Step 3: Cross multiply
    1,306.67x = 1,960.11 × 332.77
  4. Step 4: Simplify right side
    1,306.67x = 652,257.23
  5. Step 5: Solve for x
    x = 652,257.23/1,306.67
  6. Step 6: Final answer
    x = 499.18

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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.