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Finding the Fourth Proportional to 265.47, 396.15 and 238.13

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Solution

The fourth proportional to 265.47, 396.15 and 238.13 is: 355.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.47 : 396.15 = 238.13 : x
  2. Step 2: Convert to fraction form
    265.47/396.15 = 238.13/x
  3. Step 3: Cross multiply
    265.47x = 396.15 × 238.13
  4. Step 4: Simplify right side
    265.47x = 94,333.22
  5. Step 5: Solve for x
    x = 94,333.22/265.47
  6. Step 6: Final answer
    x = 355.34

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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.