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Finding the Fourth Proportional to 264.63, 395.31 and 263.43

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Solution

The fourth proportional to 264.63, 395.31 and 263.43 is: 393.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.63 : 395.31 = 263.43 : x
  2. Step 2: Convert to fraction form
    264.63/395.31 = 263.43/x
  3. Step 3: Cross multiply
    264.63x = 395.31 × 263.43
  4. Step 4: Simplify right side
    264.63x = 104,136.51
  5. Step 5: Solve for x
    x = 104,136.51/264.63
  6. Step 6: Final answer
    x = 393.52

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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.