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Finding the Fourth Proportional to 171.93, 237.79 and 153.48

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Solution

The fourth proportional to 171.93, 237.79 and 153.48 is: 212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.93 : 237.79 = 153.48 : x
  2. Step 2: Convert to fraction form
    171.93/237.79 = 153.48/x
  3. Step 3: Cross multiply
    171.93x = 237.79 × 153.48
  4. Step 4: Simplify right side
    171.93x = 36,495.63
  5. Step 5: Solve for x
    x = 36,495.63/171.93
  6. Step 6: Final answer
    x = 212.27

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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.