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Finding the Fourth Proportional to 357.39, 536.13 and 113.86

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Solution

The fourth proportional to 357.39, 536.13 and 113.86 is: 170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.39 : 536.13 = 113.86 : x
  2. Step 2: Convert to fraction form
    357.39/536.13 = 113.86/x
  3. Step 3: Cross multiply
    357.39x = 536.13 × 113.86
  4. Step 4: Simplify right side
    357.39x = 61,044.43
  5. Step 5: Solve for x
    x = 61,044.43/357.39
  6. Step 6: Final answer
    x = 170.80

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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.