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Finding the Fourth Proportional to 333.31, 499.78 and 155.02

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Solution

The fourth proportional to 333.31, 499.78 and 155.02 is: 232.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.31 : 499.78 = 155.02 : x
  2. Step 2: Convert to fraction form
    333.31/499.78 = 155.02/x
  3. Step 3: Cross multiply
    333.31x = 499.78 × 155.02
  4. Step 4: Simplify right side
    333.31x = 77,475.90
  5. Step 5: Solve for x
    x = 77,475.90/333.31
  6. Step 6: Final answer
    x = 232.44

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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.