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Finding the Fourth Proportional to 340.82, 470.55 and 224.45

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Solution

The fourth proportional to 340.82, 470.55 and 224.45 is: 309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.82 : 470.55 = 224.45 : x
  2. Step 2: Convert to fraction form
    340.82/470.55 = 224.45/x
  3. Step 3: Cross multiply
    340.82x = 470.55 × 224.45
  4. Step 4: Simplify right side
    340.82x = 105,614.95
  5. Step 5: Solve for x
    x = 105,614.95/340.82
  6. Step 6: Final answer
    x = 309.88

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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.