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Finding the Fourth Proportional to 90.22, 134.96 and 58.83

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Solution

The fourth proportional to 90.22, 134.96 and 58.83 is: 88.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.22 : 134.96 = 58.83 : x
  2. Step 2: Convert to fraction form
    90.22/134.96 = 58.83/x
  3. Step 3: Cross multiply
    90.22x = 134.96 × 58.83
  4. Step 4: Simplify right side
    90.22x = 7,939.40
  5. Step 5: Solve for x
    x = 7,939.40/90.22
  6. Step 6: Final answer
    x = 88.00

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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.