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Finding the Fourth Proportional to 315.36, 471.92 and 234

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Solution

The fourth proportional to 315.36, 471.92 and 234 is: 350.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.36 : 471.92 = 234 : x
  2. Step 2: Convert to fraction form
    315.36/471.92 = 234/x
  3. Step 3: Cross multiply
    315.36x = 471.92 × 234
  4. Step 4: Simplify right side
    315.36x = 110,429.28
  5. Step 5: Solve for x
    x = 110,429.28/315.36
  6. Step 6: Final answer
    x = 350.17

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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.