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Finding the Fourth Proportional to 219.96, 301.35 and 211.32

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Solution

The fourth proportional to 219.96, 301.35 and 211.32 is: 289.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.96 : 301.35 = 211.32 : x
  2. Step 2: Convert to fraction form
    219.96/301.35 = 211.32/x
  3. Step 3: Cross multiply
    219.96x = 301.35 × 211.32
  4. Step 4: Simplify right side
    219.96x = 63,681.28
  5. Step 5: Solve for x
    x = 63,681.28/219.96
  6. Step 6: Final answer
    x = 289.51

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.