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Finding the Fourth Proportional to 146.08, 201.54 and 90.89

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Solution

The fourth proportional to 146.08, 201.54 and 90.89 is: 125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.08 : 201.54 = 90.89 : x
  2. Step 2: Convert to fraction form
    146.08/201.54 = 90.89/x
  3. Step 3: Cross multiply
    146.08x = 201.54 × 90.89
  4. Step 4: Simplify right side
    146.08x = 18,317.97
  5. Step 5: Solve for x
    x = 18,317.97/146.08
  6. Step 6: Final answer
    x = 125.40

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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.