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Finding the Fourth Proportional to 307.67, 424.59 and 176.65

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Solution

The fourth proportional to 307.67, 424.59 and 176.65 is: 243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.67 : 424.59 = 176.65 : x
  2. Step 2: Convert to fraction form
    307.67/424.59 = 176.65/x
  3. Step 3: Cross multiply
    307.67x = 424.59 × 176.65
  4. Step 4: Simplify right side
    307.67x = 75,003.09
  5. Step 5: Solve for x
    x = 75,003.09/307.67
  6. Step 6: Final answer
    x = 243.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.