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Finding the Fourth Proportional to 333.70, 500.58 and 90.22

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Solution

The fourth proportional to 333.70, 500.58 and 90.22 is: 135.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.70 : 500.58 = 90.22 : x
  2. Step 2: Convert to fraction form
    333.70/500.58 = 90.22/x
  3. Step 3: Cross multiply
    333.70x = 500.58 × 90.22
  4. Step 4: Simplify right side
    333.70x = 45,162.33
  5. Step 5: Solve for x
    x = 45,162.33/333.70
  6. Step 6: Final answer
    x = 135.34

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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.