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Finding the Fourth Proportional to 176.79, 265.19 and 80.67

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Solution

The fourth proportional to 176.79, 265.19 and 80.67 is: 121.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.79 : 265.19 = 80.67 : x
  2. Step 2: Convert to fraction form
    176.79/265.19 = 80.67/x
  3. Step 3: Cross multiply
    176.79x = 265.19 × 80.67
  4. Step 4: Simplify right side
    176.79x = 21,392.47
  5. Step 5: Solve for x
    x = 21,392.47/176.79
  6. Step 6: Final answer
    x = 121.01

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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.