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Finding the Fourth Proportional to 356.17, 534.54 and 247.25

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Solution

The fourth proportional to 356.17, 534.54 and 247.25 is: 371.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.17 : 534.54 = 247.25 : x
  2. Step 2: Convert to fraction form
    356.17/534.54 = 247.25/x
  3. Step 3: Cross multiply
    356.17x = 534.54 × 247.25
  4. Step 4: Simplify right side
    356.17x = 132,164.42
  5. Step 5: Solve for x
    x = 132,164.42/356.17
  6. Step 6: Final answer
    x = 371.07

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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.