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Finding the Fourth Proportional to 675.67, 932.43 and 395.91

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Solution

The fourth proportional to 675.67, 932.43 and 395.91 is: 546.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.67 : 932.43 = 395.91 : x
  2. Step 2: Convert to fraction form
    675.67/932.43 = 395.91/x
  3. Step 3: Cross multiply
    675.67x = 932.43 × 395.91
  4. Step 4: Simplify right side
    675.67x = 369,162.60
  5. Step 5: Solve for x
    x = 369,162.60/675.67
  6. Step 6: Final answer
    x = 546.36

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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.