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Finding the Fourth Proportional to 333.72, 499.37 and 260.82

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Solution

The fourth proportional to 333.72, 499.37 and 260.82 is: 390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.72 : 499.37 = 260.82 : x
  2. Step 2: Convert to fraction form
    333.72/499.37 = 260.82/x
  3. Step 3: Cross multiply
    333.72x = 499.37 × 260.82
  4. Step 4: Simplify right side
    333.72x = 130,244.38
  5. Step 5: Solve for x
    x = 130,244.38/333.72
  6. Step 6: Final answer
    x = 390.28

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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.