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Finding the Fourth Proportional to 236.71, 355.01 and 90.41

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Solution

The fourth proportional to 236.71, 355.01 and 90.41 is: 135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.71 : 355.01 = 90.41 : x
  2. Step 2: Convert to fraction form
    236.71/355.01 = 90.41/x
  3. Step 3: Cross multiply
    236.71x = 355.01 × 90.41
  4. Step 4: Simplify right side
    236.71x = 32,096.68
  5. Step 5: Solve for x
    x = 32,096.68/236.71
  6. Step 6: Final answer
    x = 135.59

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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.