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Finding the Fourth Proportional to 356.75, 535.11 and 151.31

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Solution

The fourth proportional to 356.75, 535.11 and 151.31 is: 226.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.75 : 535.11 = 151.31 : x
  2. Step 2: Convert to fraction form
    356.75/535.11 = 151.31/x
  3. Step 3: Cross multiply
    356.75x = 535.11 × 151.31
  4. Step 4: Simplify right side
    356.75x = 80,967.49
  5. Step 5: Solve for x
    x = 80,967.49/356.75
  6. Step 6: Final answer
    x = 226.96

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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.