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Finding the Fourth Proportional to 513.32, 708.56 and 347.44

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Solution

The fourth proportional to 513.32, 708.56 and 347.44 is: 479.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.32 : 708.56 = 347.44 : x
  2. Step 2: Convert to fraction form
    513.32/708.56 = 347.44/x
  3. Step 3: Cross multiply
    513.32x = 708.56 × 347.44
  4. Step 4: Simplify right side
    513.32x = 246,182.09
  5. Step 5: Solve for x
    x = 246,182.09/513.32
  6. Step 6: Final answer
    x = 479.59

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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.