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Finding the Fourth Proportional to 269.90, 369.98 and 266.26

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Solution

The fourth proportional to 269.90, 369.98 and 266.26 is: 364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.90 : 369.98 = 266.26 : x
  2. Step 2: Convert to fraction form
    269.90/369.98 = 266.26/x
  3. Step 3: Cross multiply
    269.90x = 369.98 × 266.26
  4. Step 4: Simplify right side
    269.90x = 98,510.87
  5. Step 5: Solve for x
    x = 98,510.87/269.90
  6. Step 6: Final answer
    x = 364.99

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.