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Finding the Fourth Proportional to 358.12, 537.22 and 127

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Solution

The fourth proportional to 358.12, 537.22 and 127 is: 190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.12 : 537.22 = 127 : x
  2. Step 2: Convert to fraction form
    358.12/537.22 = 127/x
  3. Step 3: Cross multiply
    358.12x = 537.22 × 127
  4. Step 4: Simplify right side
    358.12x = 68,226.94
  5. Step 5: Solve for x
    x = 68,226.94/358.12
  6. Step 6: Final answer
    x = 190.51

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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.