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Finding the Fourth Proportional to 293.84, 405.49 and 223.95

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Solution

The fourth proportional to 293.84, 405.49 and 223.95 is: 309.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.84 : 405.49 = 223.95 : x
  2. Step 2: Convert to fraction form
    293.84/405.49 = 223.95/x
  3. Step 3: Cross multiply
    293.84x = 405.49 × 223.95
  4. Step 4: Simplify right side
    293.84x = 90,808.59
  5. Step 5: Solve for x
    x = 90,808.59/293.84
  6. Step 6: Final answer
    x = 309.04

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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.