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Finding the Fourth Proportional to 146.42, 202.37 and 129.08

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Solution

The fourth proportional to 146.42, 202.37 and 129.08 is: 178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.42 : 202.37 = 129.08 : x
  2. Step 2: Convert to fraction form
    146.42/202.37 = 129.08/x
  3. Step 3: Cross multiply
    146.42x = 202.37 × 129.08
  4. Step 4: Simplify right side
    146.42x = 26,122.04
  5. Step 5: Solve for x
    x = 26,122.04/146.42
  6. Step 6: Final answer
    x = 178.40

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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.