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Finding the Fourth Proportional to 234.83, 323.95 and 156.18

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Solution

The fourth proportional to 234.83, 323.95 and 156.18 is: 215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.83 : 323.95 = 156.18 : x
  2. Step 2: Convert to fraction form
    234.83/323.95 = 156.18/x
  3. Step 3: Cross multiply
    234.83x = 323.95 × 156.18
  4. Step 4: Simplify right side
    234.83x = 50,594.94
  5. Step 5: Solve for x
    x = 50,594.94/234.83
  6. Step 6: Final answer
    x = 215.46

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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.