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Finding the Fourth Proportional to 259.09, 388.53 and 96.66

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Solution

The fourth proportional to 259.09, 388.53 and 96.66 is: 144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.09 : 388.53 = 96.66 : x
  2. Step 2: Convert to fraction form
    259.09/388.53 = 96.66/x
  3. Step 3: Cross multiply
    259.09x = 388.53 × 96.66
  4. Step 4: Simplify right side
    259.09x = 37,554.83
  5. Step 5: Solve for x
    x = 37,554.83/259.09
  6. Step 6: Final answer
    x = 144.95

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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.