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Finding the Fourth Proportional to 153.08, 210.96 and 133.37

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Solution

The fourth proportional to 153.08, 210.96 and 133.37 is: 183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.08 : 210.96 = 133.37 : x
  2. Step 2: Convert to fraction form
    153.08/210.96 = 133.37/x
  3. Step 3: Cross multiply
    153.08x = 210.96 × 133.37
  4. Step 4: Simplify right side
    153.08x = 28,135.74
  5. Step 5: Solve for x
    x = 28,135.74/153.08
  6. Step 6: Final answer
    x = 183.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.