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Finding the Fourth Proportional to 233.20, 319.16 and 230.77

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Solution

The fourth proportional to 233.20, 319.16 and 230.77 is: 315.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.20 : 319.16 = 230.77 : x
  2. Step 2: Convert to fraction form
    233.20/319.16 = 230.77/x
  3. Step 3: Cross multiply
    233.20x = 319.16 × 230.77
  4. Step 4: Simplify right side
    233.20x = 73,652.55
  5. Step 5: Solve for x
    x = 73,652.55/233.20
  6. Step 6: Final answer
    x = 315.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.