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Finding the Fourth Proportional to 357.75, 536.85 and 141.35

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Solution

The fourth proportional to 357.75, 536.85 and 141.35 is: 212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.75 : 536.85 = 141.35 : x
  2. Step 2: Convert to fraction form
    357.75/536.85 = 141.35/x
  3. Step 3: Cross multiply
    357.75x = 536.85 × 141.35
  4. Step 4: Simplify right side
    357.75x = 75,881.06
  5. Step 5: Solve for x
    x = 75,881.06/357.75
  6. Step 6: Final answer
    x = 212.11

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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.