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Finding the Fourth Proportional to 358.56, 537.86 and 111.74

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Solution

The fourth proportional to 358.56, 537.86 and 111.74 is: 167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.56 : 537.86 = 111.74 : x
  2. Step 2: Convert to fraction form
    358.56/537.86 = 111.74/x
  3. Step 3: Cross multiply
    358.56x = 537.86 × 111.74
  4. Step 4: Simplify right side
    358.56x = 60,098.07
  5. Step 5: Solve for x
    x = 60,098.07/358.56
  6. Step 6: Final answer
    x = 167.61

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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.