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Finding the Fourth Proportional to 881.49, 1,318.95 and 675.75

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Solution

The fourth proportional to 881.49, 1,318.95 and 675.75 is: 1,011.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.49 : 1,318.95 = 675.75 : x
  2. Step 2: Convert to fraction form
    881.49/1,318.95 = 675.75/x
  3. Step 3: Cross multiply
    881.49x = 1,318.95 × 675.75
  4. Step 4: Simplify right side
    881.49x = 891,280.46
  5. Step 5: Solve for x
    x = 891,280.46/881.49
  6. Step 6: Final answer
    x = 1,011.11

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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.