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Finding the Fourth Proportional to 485.44, 726.56 and 357.44

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Solution

The fourth proportional to 485.44, 726.56 and 357.44 is: 534.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.44 : 726.56 = 357.44 : x
  2. Step 2: Convert to fraction form
    485.44/726.56 = 357.44/x
  3. Step 3: Cross multiply
    485.44x = 726.56 × 357.44
  4. Step 4: Simplify right side
    485.44x = 259,701.61
  5. Step 5: Solve for x
    x = 259,701.61/485.44
  6. Step 6: Final answer
    x = 534.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.