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Finding the Fourth Proportional to 333.78, 501.29 and 265.74

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Solution

The fourth proportional to 333.78, 501.29 and 265.74 is: 399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.78 : 501.29 = 265.74 : x
  2. Step 2: Convert to fraction form
    333.78/501.29 = 265.74/x
  3. Step 3: Cross multiply
    333.78x = 501.29 × 265.74
  4. Step 4: Simplify right side
    333.78x = 133,211.48
  5. Step 5: Solve for x
    x = 133,211.48/333.78
  6. Step 6: Final answer
    x = 399.10

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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.