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Finding the Fourth Proportional to 151.88, 210.04 and 143.22

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Solution

The fourth proportional to 151.88, 210.04 and 143.22 is: 198.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.88 : 210.04 = 143.22 : x
  2. Step 2: Convert to fraction form
    151.88/210.04 = 143.22/x
  3. Step 3: Cross multiply
    151.88x = 210.04 × 143.22
  4. Step 4: Simplify right side
    151.88x = 30,081.98
  5. Step 5: Solve for x
    x = 30,081.98/151.88
  6. Step 6: Final answer
    x = 198.07

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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.