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Finding the Fourth Proportional to 1,332.05, 1,996.85 and 465.75

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Solution

The fourth proportional to 1,332.05, 1,996.85 and 465.75 is: 698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.05 : 1,996.85 = 465.75 : x
  2. Step 2: Convert to fraction form
    1,332.05/1,996.85 = 465.75/x
  3. Step 3: Cross multiply
    1,332.05x = 1,996.85 × 465.75
  4. Step 4: Simplify right side
    1,332.05x = 930,034.05
  5. Step 5: Solve for x
    x = 930,034.05/1,332.05
  6. Step 6: Final answer
    x = 698.20

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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.