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Finding the Fourth Proportional to 357.90, 537.26 and 236.40

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Solution

The fourth proportional to 357.90, 537.26 and 236.40 is: 354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.90 : 537.26 = 236.40 : x
  2. Step 2: Convert to fraction form
    357.90/537.26 = 236.40/x
  3. Step 3: Cross multiply
    357.90x = 537.26 × 236.40
  4. Step 4: Simplify right side
    357.90x = 127,007.08
  5. Step 5: Solve for x
    x = 127,007.08/357.90
  6. Step 6: Final answer
    x = 354.87

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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.