Home / 850.18-1,172.80-500.66

Finding the Fourth Proportional to 850.18, 1,172.80 and 500.66

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Solution

The fourth proportional to 850.18, 1,172.80 and 500.66 is: 690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.18 : 1,172.80 = 500.66 : x
  2. Step 2: Convert to fraction form
    850.18/1,172.80 = 500.66/x
  3. Step 3: Cross multiply
    850.18x = 1,172.80 × 500.66
  4. Step 4: Simplify right side
    850.18x = 587,174.05
  5. Step 5: Solve for x
    x = 587,174.05/850.18
  6. Step 6: Final answer
    x = 690.65

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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.