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Finding the Fourth Proportional to 176.58, 243.66 and 111.06

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Solution

The fourth proportional to 176.58, 243.66 and 111.06 is: 153.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.58 : 243.66 = 111.06 : x
  2. Step 2: Convert to fraction form
    176.58/243.66 = 111.06/x
  3. Step 3: Cross multiply
    176.58x = 243.66 × 111.06
  4. Step 4: Simplify right side
    176.58x = 27,060.88
  5. Step 5: Solve for x
    x = 27,060.88/176.58
  6. Step 6: Final answer
    x = 153.25

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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.