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Finding the Fourth Proportional to 333.63, 460.68 and 221.70

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Solution

The fourth proportional to 333.63, 460.68 and 221.70 is: 306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.63 : 460.68 = 221.70 : x
  2. Step 2: Convert to fraction form
    333.63/460.68 = 221.70/x
  3. Step 3: Cross multiply
    333.63x = 460.68 × 221.70
  4. Step 4: Simplify right side
    333.63x = 102,133.65
  5. Step 5: Solve for x
    x = 102,133.65/333.63
  6. Step 6: Final answer
    x = 306.13

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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.