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Finding the Fourth Proportional to 155.36, 213.12 and 146.05

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Solution

The fourth proportional to 155.36, 213.12 and 146.05 is: 200.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.36 : 213.12 = 146.05 : x
  2. Step 2: Convert to fraction form
    155.36/213.12 = 146.05/x
  3. Step 3: Cross multiply
    155.36x = 213.12 × 146.05
  4. Step 4: Simplify right side
    155.36x = 31,125.64
  5. Step 5: Solve for x
    x = 31,125.64/155.36
  6. Step 6: Final answer
    x = 200.34

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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.