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Finding the Fourth Proportional to 881.49, 1,323.45 and 606.90

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Solution

The fourth proportional to 881.49, 1,323.45 and 606.90 is: 911.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.49 : 1,323.45 = 606.90 : x
  2. Step 2: Convert to fraction form
    881.49/1,323.45 = 606.90/x
  3. Step 3: Cross multiply
    881.49x = 1,323.45 × 606.90
  4. Step 4: Simplify right side
    881.49x = 803,201.81
  5. Step 5: Solve for x
    x = 803,201.81/881.49
  6. Step 6: Final answer
    x = 911.19

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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.