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Finding the Fourth Proportional to 90.03, 134.94 and 32.21

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Solution

The fourth proportional to 90.03, 134.94 and 32.21 is: 48.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.03 : 134.94 = 32.21 : x
  2. Step 2: Convert to fraction form
    90.03/134.94 = 32.21/x
  3. Step 3: Cross multiply
    90.03x = 134.94 × 32.21
  4. Step 4: Simplify right side
    90.03x = 4,346.88
  5. Step 5: Solve for x
    x = 4,346.88/90.03
  6. Step 6: Final answer
    x = 48.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.