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Finding the Fourth Proportional to 372.26, 561.72 and 357.27

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Solution

The fourth proportional to 372.26, 561.72 and 357.27 is: 539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.26 : 561.72 = 357.27 : x
  2. Step 2: Convert to fraction form
    372.26/561.72 = 357.27/x
  3. Step 3: Cross multiply
    372.26x = 561.72 × 357.27
  4. Step 4: Simplify right side
    372.26x = 200,684.36
  5. Step 5: Solve for x
    x = 200,684.36/372.26
  6. Step 6: Final answer
    x = 539.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.