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Finding the Fourth Proportional to 233.25, 321.75 and 145.95

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Solution

The fourth proportional to 233.25, 321.75 and 145.95 is: 201.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.25 : 321.75 = 145.95 : x
  2. Step 2: Convert to fraction form
    233.25/321.75 = 145.95/x
  3. Step 3: Cross multiply
    233.25x = 321.75 × 145.95
  4. Step 4: Simplify right side
    233.25x = 46,959.41
  5. Step 5: Solve for x
    x = 46,959.41/233.25
  6. Step 6: Final answer
    x = 201.33

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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.