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Finding the Fourth Proportional to 265.63, 398.17 and 192.32

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Solution

The fourth proportional to 265.63, 398.17 and 192.32 is: 288.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.63 : 398.17 = 192.32 : x
  2. Step 2: Convert to fraction form
    265.63/398.17 = 192.32/x
  3. Step 3: Cross multiply
    265.63x = 398.17 × 192.32
  4. Step 4: Simplify right side
    265.63x = 76,575.90
  5. Step 5: Solve for x
    x = 76,575.90/265.63
  6. Step 6: Final answer
    x = 288.28

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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.