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Finding the Fourth Proportional to 315.84, 473.22 and 178.85

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Solution

The fourth proportional to 315.84, 473.22 and 178.85 is: 267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.84 : 473.22 = 178.85 : x
  2. Step 2: Convert to fraction form
    315.84/473.22 = 178.85/x
  3. Step 3: Cross multiply
    315.84x = 473.22 × 178.85
  4. Step 4: Simplify right side
    315.84x = 84,635.40
  5. Step 5: Solve for x
    x = 84,635.40/315.84
  6. Step 6: Final answer
    x = 267.97

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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.