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Finding the Fourth Proportional to 153, 229.15 and 92.06

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Solution

The fourth proportional to 153, 229.15 and 92.06 is: 137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153 : 229.15 = 92.06 : x
  2. Step 2: Convert to fraction form
    153/229.15 = 92.06/x
  3. Step 3: Cross multiply
    153x = 229.15 × 92.06
  4. Step 4: Simplify right side
    153x = 21,095.55
  5. Step 5: Solve for x
    x = 21,095.55/153
  6. Step 6: Final answer
    x = 137.88

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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.