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Finding the Fourth Proportional to 157.49, 236.10 and 118.89

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Solution

The fourth proportional to 157.49, 236.10 and 118.89 is: 178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.49 : 236.10 = 118.89 : x
  2. Step 2: Convert to fraction form
    157.49/236.10 = 118.89/x
  3. Step 3: Cross multiply
    157.49x = 236.10 × 118.89
  4. Step 4: Simplify right side
    157.49x = 28,069.93
  5. Step 5: Solve for x
    x = 28,069.93/157.49
  6. Step 6: Final answer
    x = 178.23

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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.