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Finding the Fourth Proportional to 888.53, 1,330.97 and 558.45

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Solution

The fourth proportional to 888.53, 1,330.97 and 558.45 is: 836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.53 : 1,330.97 = 558.45 : x
  2. Step 2: Convert to fraction form
    888.53/1,330.97 = 558.45/x
  3. Step 3: Cross multiply
    888.53x = 1,330.97 × 558.45
  4. Step 4: Simplify right side
    888.53x = 743,277.40
  5. Step 5: Solve for x
    x = 743,277.40/888.53
  6. Step 6: Final answer
    x = 836.53

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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.