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Finding the Fourth Proportional to 150.99, 208.30 and 109.48

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Solution

The fourth proportional to 150.99, 208.30 and 109.48 is: 151.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.99 : 208.30 = 109.48 : x
  2. Step 2: Convert to fraction form
    150.99/208.30 = 109.48/x
  3. Step 3: Cross multiply
    150.99x = 208.30 × 109.48
  4. Step 4: Simplify right side
    150.99x = 22,804.68
  5. Step 5: Solve for x
    x = 22,804.68/150.99
  6. Step 6: Final answer
    x = 151.03

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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.