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Finding the Fourth Proportional to 230.83, 345.63 and 122.39

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Solution

The fourth proportional to 230.83, 345.63 and 122.39 is: 183.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.83 : 345.63 = 122.39 : x
  2. Step 2: Convert to fraction form
    230.83/345.63 = 122.39/x
  3. Step 3: Cross multiply
    230.83x = 345.63 × 122.39
  4. Step 4: Simplify right side
    230.83x = 42,301.66
  5. Step 5: Solve for x
    x = 42,301.66/230.83
  6. Step 6: Final answer
    x = 183.26

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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.