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Finding the Fourth Proportional to 968.80, 1,452.05 and 557.09

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Solution

The fourth proportional to 968.80, 1,452.05 and 557.09 is: 834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.80 : 1,452.05 = 557.09 : x
  2. Step 2: Convert to fraction form
    968.80/1,452.05 = 557.09/x
  3. Step 3: Cross multiply
    968.80x = 1,452.05 × 557.09
  4. Step 4: Simplify right side
    968.80x = 808,917.27
  5. Step 5: Solve for x
    x = 808,917.27/968.80
  6. Step 6: Final answer
    x = 834.97

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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.