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Finding the Fourth Proportional to 557.12, 834.60 and 511.22

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Solution

The fourth proportional to 557.12, 834.60 and 511.22 is: 765.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.12 : 834.60 = 511.22 : x
  2. Step 2: Convert to fraction form
    557.12/834.60 = 511.22/x
  3. Step 3: Cross multiply
    557.12x = 834.60 × 511.22
  4. Step 4: Simplify right side
    557.12x = 426,664.21
  5. Step 5: Solve for x
    x = 426,664.21/557.12
  6. Step 6: Final answer
    x = 765.84

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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.