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Finding the Fourth Proportional to 161.37, 240.71 and 135.87

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Solution

The fourth proportional to 161.37, 240.71 and 135.87 is: 202.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.37 : 240.71 = 135.87 : x
  2. Step 2: Convert to fraction form
    161.37/240.71 = 135.87/x
  3. Step 3: Cross multiply
    161.37x = 240.71 × 135.87
  4. Step 4: Simplify right side
    161.37x = 32,704.59
  5. Step 5: Solve for x
    x = 32,704.59/161.37
  6. Step 6: Final answer
    x = 202.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.