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Finding the Fourth Proportional to 219.88, 303.54 and 151.24

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Solution

The fourth proportional to 219.88, 303.54 and 151.24 is: 208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.88 : 303.54 = 151.24 : x
  2. Step 2: Convert to fraction form
    219.88/303.54 = 151.24/x
  3. Step 3: Cross multiply
    219.88x = 303.54 × 151.24
  4. Step 4: Simplify right side
    219.88x = 45,907.39
  5. Step 5: Solve for x
    x = 45,907.39/219.88
  6. Step 6: Final answer
    x = 208.78

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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.