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Finding the Fourth Proportional to 227.79, 339.66 and 210.06

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Solution

The fourth proportional to 227.79, 339.66 and 210.06 is: 313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.79 : 339.66 = 210.06 : x
  2. Step 2: Convert to fraction form
    227.79/339.66 = 210.06/x
  3. Step 3: Cross multiply
    227.79x = 339.66 × 210.06
  4. Step 4: Simplify right side
    227.79x = 71,348.98
  5. Step 5: Solve for x
    x = 71,348.98/227.79
  6. Step 6: Final answer
    x = 313.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.