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Finding the Fourth Proportional to 356.81, 535.31 and 151.39

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Solution

The fourth proportional to 356.81, 535.31 and 151.39 is: 227.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.81 : 535.31 = 151.39 : x
  2. Step 2: Convert to fraction form
    356.81/535.31 = 151.39/x
  3. Step 3: Cross multiply
    356.81x = 535.31 × 151.39
  4. Step 4: Simplify right side
    356.81x = 81,037.15
  5. Step 5: Solve for x
    x = 81,037.15/356.81
  6. Step 6: Final answer
    x = 227.12

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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.