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Finding the Fourth Proportional to 221.04, 304.92 and 151.08

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Solution

The fourth proportional to 221.04, 304.92 and 151.08 is: 208.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.04 : 304.92 = 151.08 : x
  2. Step 2: Convert to fraction form
    221.04/304.92 = 151.08/x
  3. Step 3: Cross multiply
    221.04x = 304.92 × 151.08
  4. Step 4: Simplify right side
    221.04x = 46,067.31
  5. Step 5: Solve for x
    x = 46,067.31/221.04
  6. Step 6: Final answer
    x = 208.41

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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.