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Finding the Fourth Proportional to 147.40, 222.49 and 147.40

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Solution

The fourth proportional to 147.40, 222.49 and 147.40 is: 222.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.40 : 222.49 = 147.40 : x
  2. Step 2: Convert to fraction form
    147.40/222.49 = 147.40/x
  3. Step 3: Cross multiply
    147.40x = 222.49 × 147.40
  4. Step 4: Simplify right side
    147.40x = 32,795.03
  5. Step 5: Solve for x
    x = 32,795.03/147.40
  6. Step 6: Final answer
    x = 222.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.