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Finding the Fourth Proportional to 333.35, 499.98 and 89.90

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Solution

The fourth proportional to 333.35, 499.98 and 89.90 is: 134.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.35 : 499.98 = 89.90 : x
  2. Step 2: Convert to fraction form
    333.35/499.98 = 89.90/x
  3. Step 3: Cross multiply
    333.35x = 499.98 × 89.90
  4. Step 4: Simplify right side
    333.35x = 44,948.20
  5. Step 5: Solve for x
    x = 44,948.20/333.35
  6. Step 6: Final answer
    x = 134.84

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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.