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Finding the Fourth Proportional to 268.99, 403.10 and 240.17

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Solution

The fourth proportional to 268.99, 403.10 and 240.17 is: 359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.99 : 403.10 = 240.17 : x
  2. Step 2: Convert to fraction form
    268.99/403.10 = 240.17/x
  3. Step 3: Cross multiply
    268.99x = 403.10 × 240.17
  4. Step 4: Simplify right side
    268.99x = 96,812.53
  5. Step 5: Solve for x
    x = 96,812.53/268.99
  6. Step 6: Final answer
    x = 359.91

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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.