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Finding the Fourth Proportional to 511.50, 767.67 and 357.74

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Solution

The fourth proportional to 511.50, 767.67 and 357.74 is: 536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.50 : 767.67 = 357.74 : x
  2. Step 2: Convert to fraction form
    511.50/767.67 = 357.74/x
  3. Step 3: Cross multiply
    511.50x = 767.67 × 357.74
  4. Step 4: Simplify right side
    511.50x = 274,622.43
  5. Step 5: Solve for x
    x = 274,622.43/511.50
  6. Step 6: Final answer
    x = 536.90

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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.