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Finding the Fourth Proportional to 515.56, 708.57 and 482.92

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Solution

The fourth proportional to 515.56, 708.57 and 482.92 is: 663.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.56 : 708.57 = 482.92 : x
  2. Step 2: Convert to fraction form
    515.56/708.57 = 482.92/x
  3. Step 3: Cross multiply
    515.56x = 708.57 × 482.92
  4. Step 4: Simplify right side
    515.56x = 342,182.62
  5. Step 5: Solve for x
    x = 342,182.62/515.56
  6. Step 6: Final answer
    x = 663.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.