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Finding the Fourth Proportional to 357.01, 535.31 and 140.34

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Solution

The fourth proportional to 357.01, 535.31 and 140.34 is: 210.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.01 : 535.31 = 140.34 : x
  2. Step 2: Convert to fraction form
    357.01/535.31 = 140.34/x
  3. Step 3: Cross multiply
    357.01x = 535.31 × 140.34
  4. Step 4: Simplify right side
    357.01x = 75,125.41
  5. Step 5: Solve for x
    x = 75,125.41/357.01
  6. Step 6: Final answer
    x = 210.43

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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.