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Finding the Fourth Proportional to 176.79, 265.25 and 108.21

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Solution

The fourth proportional to 176.79, 265.25 and 108.21 is: 162.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.79 : 265.25 = 108.21 : x
  2. Step 2: Convert to fraction form
    176.79/265.25 = 108.21/x
  3. Step 3: Cross multiply
    176.79x = 265.25 × 108.21
  4. Step 4: Simplify right side
    176.79x = 28,702.97
  5. Step 5: Solve for x
    x = 28,702.97/176.79
  6. Step 6: Final answer
    x = 162.36

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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.