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Finding the Fourth Proportional to 146.65, 201.47 and 131.31

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Solution

The fourth proportional to 146.65, 201.47 and 131.31 is: 180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.65 : 201.47 = 131.31 : x
  2. Step 2: Convert to fraction form
    146.65/201.47 = 131.31/x
  3. Step 3: Cross multiply
    146.65x = 201.47 × 131.31
  4. Step 4: Simplify right side
    146.65x = 26,455.03
  5. Step 5: Solve for x
    x = 26,455.03/146.65
  6. Step 6: Final answer
    x = 180.40

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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.