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Finding the Fourth Proportional to 557.20, 835.16 and 268.56

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Solution

The fourth proportional to 557.20, 835.16 and 268.56 is: 402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.20 : 835.16 = 268.56 : x
  2. Step 2: Convert to fraction form
    557.20/835.16 = 268.56/x
  3. Step 3: Cross multiply
    557.20x = 835.16 × 268.56
  4. Step 4: Simplify right side
    557.20x = 224,290.57
  5. Step 5: Solve for x
    x = 224,290.57/557.20
  6. Step 6: Final answer
    x = 402.53

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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.