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Finding the Fourth Proportional to 153.60, 210.60 and 150.88

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Solution

The fourth proportional to 153.60, 210.60 and 150.88 is: 206.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.60 : 210.60 = 150.88 : x
  2. Step 2: Convert to fraction form
    153.60/210.60 = 150.88/x
  3. Step 3: Cross multiply
    153.60x = 210.60 × 150.88
  4. Step 4: Simplify right side
    153.60x = 31,775.33
  5. Step 5: Solve for x
    x = 31,775.33/153.60
  6. Step 6: Final answer
    x = 206.87

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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.