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Finding the Fourth Proportional to 96.72, 144 and 92.07

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Solution

The fourth proportional to 96.72, 144 and 92.07 is: 137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.72 : 144 = 92.07 : x
  2. Step 2: Convert to fraction form
    96.72/144 = 92.07/x
  3. Step 3: Cross multiply
    96.72x = 144 × 92.07
  4. Step 4: Simplify right side
    96.72x = 13,258.08
  5. Step 5: Solve for x
    x = 13,258.08/96.72
  6. Step 6: Final answer
    x = 137.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.