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Finding the Fourth Proportional to 263.12, 392.24 and 259.12

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Solution

The fourth proportional to 263.12, 392.24 and 259.12 is: 386.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.12 : 392.24 = 259.12 : x
  2. Step 2: Convert to fraction form
    263.12/392.24 = 259.12/x
  3. Step 3: Cross multiply
    263.12x = 392.24 × 259.12
  4. Step 4: Simplify right side
    263.12x = 101,637.23
  5. Step 5: Solve for x
    x = 101,637.23/263.12
  6. Step 6: Final answer
    x = 386.28

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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.