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Finding the Fourth Proportional to 884.01, 1,221.18 and 662.49

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Solution

The fourth proportional to 884.01, 1,221.18 and 662.49 is: 915.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.01 : 1,221.18 = 662.49 : x
  2. Step 2: Convert to fraction form
    884.01/1,221.18 = 662.49/x
  3. Step 3: Cross multiply
    884.01x = 1,221.18 × 662.49
  4. Step 4: Simplify right side
    884.01x = 809,019.54
  5. Step 5: Solve for x
    x = 809,019.54/884.01
  6. Step 6: Final answer
    x = 915.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.