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Finding the Fourth Proportional to 148.55, 205.09 and 116.99

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Solution

The fourth proportional to 148.55, 205.09 and 116.99 is: 161.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.55 : 205.09 = 116.99 : x
  2. Step 2: Convert to fraction form
    148.55/205.09 = 116.99/x
  3. Step 3: Cross multiply
    148.55x = 205.09 × 116.99
  4. Step 4: Simplify right side
    148.55x = 23,992.16
  5. Step 5: Solve for x
    x = 23,992.16/148.55
  6. Step 6: Final answer
    x = 161.51

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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.