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Finding the Fourth Proportional to 208.60, 287.82 and 150.48

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Solution

The fourth proportional to 208.60, 287.82 and 150.48 is: 207.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.60 : 287.82 = 150.48 : x
  2. Step 2: Convert to fraction form
    208.60/287.82 = 150.48/x
  3. Step 3: Cross multiply
    208.60x = 287.82 × 150.48
  4. Step 4: Simplify right side
    208.60x = 43,311.15
  5. Step 5: Solve for x
    x = 43,311.15/208.60
  6. Step 6: Final answer
    x = 207.63

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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.