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Finding the Fourth Proportional to 495.78, 742.86 and 333.51

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Solution

The fourth proportional to 495.78, 742.86 and 333.51 is: 499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.78 : 742.86 = 333.51 : x
  2. Step 2: Convert to fraction form
    495.78/742.86 = 333.51/x
  3. Step 3: Cross multiply
    495.78x = 742.86 × 333.51
  4. Step 4: Simplify right side
    495.78x = 247,751.24
  5. Step 5: Solve for x
    x = 247,751.24/495.78
  6. Step 6: Final answer
    x = 499.72

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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.