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Finding the Fourth Proportional to 176.93, 264.91 and 91.25

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Solution

The fourth proportional to 176.93, 264.91 and 91.25 is: 136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.93 : 264.91 = 91.25 : x
  2. Step 2: Convert to fraction form
    176.93/264.91 = 91.25/x
  3. Step 3: Cross multiply
    176.93x = 264.91 × 91.25
  4. Step 4: Simplify right side
    176.93x = 24,171.48
  5. Step 5: Solve for x
    x = 24,171.48/176.93
  6. Step 6: Final answer
    x = 136.62

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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.