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Finding the Fourth Proportional to 153.05, 210.78 and 132.32

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Solution

The fourth proportional to 153.05, 210.78 and 132.32 is: 182.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.05 : 210.78 = 132.32 : x
  2. Step 2: Convert to fraction form
    153.05/210.78 = 132.32/x
  3. Step 3: Cross multiply
    153.05x = 210.78 × 132.32
  4. Step 4: Simplify right side
    153.05x = 27,889.36
  5. Step 5: Solve for x
    x = 27,889.36/153.05
  6. Step 6: Final answer
    x = 182.23

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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.