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Finding the Fourth Proportional to 152.83, 229.19 and 80.65

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Solution

The fourth proportional to 152.83, 229.19 and 80.65 is: 120.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.83 : 229.19 = 80.65 : x
  2. Step 2: Convert to fraction form
    152.83/229.19 = 80.65/x
  3. Step 3: Cross multiply
    152.83x = 229.19 × 80.65
  4. Step 4: Simplify right side
    152.83x = 18,483.23
  5. Step 5: Solve for x
    x = 18,483.23/152.83
  6. Step 6: Final answer
    x = 120.94

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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.