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Finding the Fourth Proportional to 354.33, 489.08 and 236.48

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Solution

The fourth proportional to 354.33, 489.08 and 236.48 is: 326.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.33 : 489.08 = 236.48 : x
  2. Step 2: Convert to fraction form
    354.33/489.08 = 236.48/x
  3. Step 3: Cross multiply
    354.33x = 489.08 × 236.48
  4. Step 4: Simplify right side
    354.33x = 115,655.19
  5. Step 5: Solve for x
    x = 115,655.19/354.33
  6. Step 6: Final answer
    x = 326.41

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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.