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Finding the Fourth Proportional to 880.31, 1,320.50 and 303.19

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Solution

The fourth proportional to 880.31, 1,320.50 and 303.19 is: 454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.31 : 1,320.50 = 303.19 : x
  2. Step 2: Convert to fraction form
    880.31/1,320.50 = 303.19/x
  3. Step 3: Cross multiply
    880.31x = 1,320.50 × 303.19
  4. Step 4: Simplify right side
    880.31x = 400,359.85
  5. Step 5: Solve for x
    x = 400,359.85/880.31
  6. Step 6: Final answer
    x = 454.79

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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.