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Finding the Fourth Proportional to 358.70, 537.95 and 127.56

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Solution

The fourth proportional to 358.70, 537.95 and 127.56 is: 191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.70 : 537.95 = 127.56 : x
  2. Step 2: Convert to fraction form
    358.70/537.95 = 127.56/x
  3. Step 3: Cross multiply
    358.70x = 537.95 × 127.56
  4. Step 4: Simplify right side
    358.70x = 68,617.57
  5. Step 5: Solve for x
    x = 68,617.57/358.70
  6. Step 6: Final answer
    x = 191.30

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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.