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Finding the Fourth Proportional to 151.59, 209.02 and 105.03

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Solution

The fourth proportional to 151.59, 209.02 and 105.03 is: 144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.59 : 209.02 = 105.03 : x
  2. Step 2: Convert to fraction form
    151.59/209.02 = 105.03/x
  3. Step 3: Cross multiply
    151.59x = 209.02 × 105.03
  4. Step 4: Simplify right side
    151.59x = 21,953.37
  5. Step 5: Solve for x
    x = 21,953.37/151.59
  6. Step 6: Final answer
    x = 144.82

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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.