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Finding the Fourth Proportional to 556.68, 769.08 and 512.94

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Solution

The fourth proportional to 556.68, 769.08 and 512.94 is: 708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.68 : 769.08 = 512.94 : x
  2. Step 2: Convert to fraction form
    556.68/769.08 = 512.94/x
  3. Step 3: Cross multiply
    556.68x = 769.08 × 512.94
  4. Step 4: Simplify right side
    556.68x = 394,491.90
  5. Step 5: Solve for x
    x = 394,491.90/556.68
  6. Step 6: Final answer
    x = 708.65

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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.