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Finding the Fourth Proportional to 219.45, 302.75 and 191.82

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Solution

The fourth proportional to 219.45, 302.75 and 191.82 is: 264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.45 : 302.75 = 191.82 : x
  2. Step 2: Convert to fraction form
    219.45/302.75 = 191.82/x
  3. Step 3: Cross multiply
    219.45x = 302.75 × 191.82
  4. Step 4: Simplify right side
    219.45x = 58,073.51
  5. Step 5: Solve for x
    x = 58,073.51/219.45
  6. Step 6: Final answer
    x = 264.63

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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.