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Finding the Fourth Proportional to 152.16, 226.62 and 147.90

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Solution

The fourth proportional to 152.16, 226.62 and 147.90 is: 220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.16 : 226.62 = 147.90 : x
  2. Step 2: Convert to fraction form
    152.16/226.62 = 147.90/x
  3. Step 3: Cross multiply
    152.16x = 226.62 × 147.90
  4. Step 4: Simplify right side
    152.16x = 33,517.10
  5. Step 5: Solve for x
    x = 33,517.10/152.16
  6. Step 6: Final answer
    x = 220.28

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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.