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Finding the Fourth Proportional to 224.58, 338.28 and 210.91

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Solution

The fourth proportional to 224.58, 338.28 and 210.91 is: 317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.58 : 338.28 = 210.91 : x
  2. Step 2: Convert to fraction form
    224.58/338.28 = 210.91/x
  3. Step 3: Cross multiply
    224.58x = 338.28 × 210.91
  4. Step 4: Simplify right side
    224.58x = 71,346.63
  5. Step 5: Solve for x
    x = 71,346.63/224.58
  6. Step 6: Final answer
    x = 317.69

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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.