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Finding the Fourth Proportional to 681.89, 942.03 and 550.67

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Solution

The fourth proportional to 681.89, 942.03 and 550.67 is: 760.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.89 : 942.03 = 550.67 : x
  2. Step 2: Convert to fraction form
    681.89/942.03 = 550.67/x
  3. Step 3: Cross multiply
    681.89x = 942.03 × 550.67
  4. Step 4: Simplify right side
    681.89x = 518,742.95
  5. Step 5: Solve for x
    x = 518,742.95/681.89
  6. Step 6: Final answer
    x = 760.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.