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Finding the Fourth Proportional to 950.37, 1,311.03 and 655.80

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Solution

The fourth proportional to 950.37, 1,311.03 and 655.80 is: 904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.37 : 1,311.03 = 655.80 : x
  2. Step 2: Convert to fraction form
    950.37/1,311.03 = 655.80/x
  3. Step 3: Cross multiply
    950.37x = 1,311.03 × 655.80
  4. Step 4: Simplify right side
    950.37x = 859,773.47
  5. Step 5: Solve for x
    x = 859,773.47/950.37
  6. Step 6: Final answer
    x = 904.67

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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.