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Finding the Fourth Proportional to 149.64, 222.65 and 148.47

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Solution

The fourth proportional to 149.64, 222.65 and 148.47 is: 220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.64 : 222.65 = 148.47 : x
  2. Step 2: Convert to fraction form
    149.64/222.65 = 148.47/x
  3. Step 3: Cross multiply
    149.64x = 222.65 × 148.47
  4. Step 4: Simplify right side
    149.64x = 33,056.10
  5. Step 5: Solve for x
    x = 33,056.10/149.64
  6. Step 6: Final answer
    x = 220.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.