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Finding the Fourth Proportional to 356.52, 535.58 and 254.12

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Solution

The fourth proportional to 356.52, 535.58 and 254.12 is: 381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.52 : 535.58 = 254.12 : x
  2. Step 2: Convert to fraction form
    356.52/535.58 = 254.12/x
  3. Step 3: Cross multiply
    356.52x = 535.58 × 254.12
  4. Step 4: Simplify right side
    356.52x = 136,101.59
  5. Step 5: Solve for x
    x = 136,101.59/356.52
  6. Step 6: Final answer
    x = 381.75

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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.