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Finding the Fourth Proportional to 225.71, 340.28 and 210.05

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Solution

The fourth proportional to 225.71, 340.28 and 210.05 is: 316.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.71 : 340.28 = 210.05 : x
  2. Step 2: Convert to fraction form
    225.71/340.28 = 210.05/x
  3. Step 3: Cross multiply
    225.71x = 340.28 × 210.05
  4. Step 4: Simplify right side
    225.71x = 71,473.06
  5. Step 5: Solve for x
    x = 71,473.06/225.71
  6. Step 6: Final answer
    x = 316.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.