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Finding the Fourth Proportional to 154.46, 212.26 and 147.32

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Solution

The fourth proportional to 154.46, 212.26 and 147.32 is: 202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.46 : 212.26 = 147.32 : x
  2. Step 2: Convert to fraction form
    154.46/212.26 = 147.32/x
  3. Step 3: Cross multiply
    154.46x = 212.26 × 147.32
  4. Step 4: Simplify right side
    154.46x = 31,270.14
  5. Step 5: Solve for x
    x = 31,270.14/154.46
  6. Step 6: Final answer
    x = 202.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.