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Finding the Fourth Proportional to 675.56, 932.84 and 455.24

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Solution

The fourth proportional to 675.56, 932.84 and 455.24 is: 628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.56 : 932.84 = 455.24 : x
  2. Step 2: Convert to fraction form
    675.56/932.84 = 455.24/x
  3. Step 3: Cross multiply
    675.56x = 932.84 × 455.24
  4. Step 4: Simplify right side
    675.56x = 424,659.14
  5. Step 5: Solve for x
    x = 424,659.14/675.56
  6. Step 6: Final answer
    x = 628.61

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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.