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Finding the Fourth Proportional to 309.45, 465.18 and 240.99

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Solution

The fourth proportional to 309.45, 465.18 and 240.99 is: 362.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.45 : 465.18 = 240.99 : x
  2. Step 2: Convert to fraction form
    309.45/465.18 = 240.99/x
  3. Step 3: Cross multiply
    309.45x = 465.18 × 240.99
  4. Step 4: Simplify right side
    309.45x = 112,103.73
  5. Step 5: Solve for x
    x = 112,103.73/309.45
  6. Step 6: Final answer
    x = 362.27

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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.