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Finding the Fourth Proportional to 338.93, 507.79 and 230.33

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Solution

The fourth proportional to 338.93, 507.79 and 230.33 is: 345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.93 : 507.79 = 230.33 : x
  2. Step 2: Convert to fraction form
    338.93/507.79 = 230.33/x
  3. Step 3: Cross multiply
    338.93x = 507.79 × 230.33
  4. Step 4: Simplify right side
    338.93x = 116,959.27
  5. Step 5: Solve for x
    x = 116,959.27/338.93
  6. Step 6: Final answer
    x = 345.08

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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.