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Finding the Fourth Proportional to 309.04, 426.47 and 176.27

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Solution

The fourth proportional to 309.04, 426.47 and 176.27 is: 243.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.04 : 426.47 = 176.27 : x
  2. Step 2: Convert to fraction form
    309.04/426.47 = 176.27/x
  3. Step 3: Cross multiply
    309.04x = 426.47 × 176.27
  4. Step 4: Simplify right side
    309.04x = 75,170.85
  5. Step 5: Solve for x
    x = 75,170.85/309.04
  6. Step 6: Final answer
    x = 243.24

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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.