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Finding the Fourth Proportional to 264.35, 393.99 and 263.94

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Solution

The fourth proportional to 264.35, 393.99 and 263.94 is: 393.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.35 : 393.99 = 263.94 : x
  2. Step 2: Convert to fraction form
    264.35/393.99 = 263.94/x
  3. Step 3: Cross multiply
    264.35x = 393.99 × 263.94
  4. Step 4: Simplify right side
    264.35x = 103,989.72
  5. Step 5: Solve for x
    x = 103,989.72/264.35
  6. Step 6: Final answer
    x = 393.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.