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Finding the Fourth Proportional to 150.34, 225.60 and 69.16

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Solution

The fourth proportional to 150.34, 225.60 and 69.16 is: 103.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.34 : 225.60 = 69.16 : x
  2. Step 2: Convert to fraction form
    150.34/225.60 = 69.16/x
  3. Step 3: Cross multiply
    150.34x = 225.60 × 69.16
  4. Step 4: Simplify right side
    150.34x = 15,602.50
  5. Step 5: Solve for x
    x = 15,602.50/150.34
  6. Step 6: Final answer
    x = 103.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.