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Finding the Fourth Proportional to 176.96, 243.60 and 153.33

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Solution

The fourth proportional to 176.96, 243.60 and 153.33 is: 211.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.96 : 243.60 = 153.33 : x
  2. Step 2: Convert to fraction form
    176.96/243.60 = 153.33/x
  3. Step 3: Cross multiply
    176.96x = 243.60 × 153.33
  4. Step 4: Simplify right side
    176.96x = 37,351.19
  5. Step 5: Solve for x
    x = 37,351.19/176.96
  6. Step 6: Final answer
    x = 211.07

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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.