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Finding the Fourth Proportional to 880.31, 1,319.81 and 295.11

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Solution

The fourth proportional to 880.31, 1,319.81 and 295.11 is: 442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.31 : 1,319.81 = 295.11 : x
  2. Step 2: Convert to fraction form
    880.31/1,319.81 = 295.11/x
  3. Step 3: Cross multiply
    880.31x = 1,319.81 × 295.11
  4. Step 4: Simplify right side
    880.31x = 389,487.65
  5. Step 5: Solve for x
    x = 389,487.65/880.31
  6. Step 6: Final answer
    x = 442.44

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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.