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Finding the Fourth Proportional to 357.80, 536.38 and 141.32

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Solution

The fourth proportional to 357.80, 536.38 and 141.32 is: 211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.80 : 536.38 = 141.32 : x
  2. Step 2: Convert to fraction form
    357.80/536.38 = 141.32/x
  3. Step 3: Cross multiply
    357.80x = 536.38 × 141.32
  4. Step 4: Simplify right side
    357.80x = 75,801.22
  5. Step 5: Solve for x
    x = 75,801.22/357.80
  6. Step 6: Final answer
    x = 211.85

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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.