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Finding the Fourth Proportional to 340.89, 470.22 and 214.65

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Solution

The fourth proportional to 340.89, 470.22 and 214.65 is: 296.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.89 : 470.22 = 214.65 : x
  2. Step 2: Convert to fraction form
    340.89/470.22 = 214.65/x
  3. Step 3: Cross multiply
    340.89x = 470.22 × 214.65
  4. Step 4: Simplify right side
    340.89x = 100,930.37
  5. Step 5: Solve for x
    x = 100,930.37/340.89
  6. Step 6: Final answer
    x = 296.08

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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.