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Finding the Fourth Proportional to 165.70, 247.33 and 155.44

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Solution

The fourth proportional to 165.70, 247.33 and 155.44 is: 232.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.70 : 247.33 = 155.44 : x
  2. Step 2: Convert to fraction form
    165.70/247.33 = 155.44/x
  3. Step 3: Cross multiply
    165.70x = 247.33 × 155.44
  4. Step 4: Simplify right side
    165.70x = 38,444.98
  5. Step 5: Solve for x
    x = 38,444.98/165.70
  6. Step 6: Final answer
    x = 232.02

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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.