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Finding the Fourth Proportional to 516.16, 712.04 and 348.20

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Solution

The fourth proportional to 516.16, 712.04 and 348.20 is: 480.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.16 : 712.04 = 348.20 : x
  2. Step 2: Convert to fraction form
    516.16/712.04 = 348.20/x
  3. Step 3: Cross multiply
    516.16x = 712.04 × 348.20
  4. Step 4: Simplify right side
    516.16x = 247,932.33
  5. Step 5: Solve for x
    x = 247,932.33/516.16
  6. Step 6: Final answer
    x = 480.34

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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.