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Finding the Fourth Proportional to 950.44, 1,311.15 and 670.72

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Solution

The fourth proportional to 950.44, 1,311.15 and 670.72 is: 925.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.44 : 1,311.15 = 670.72 : x
  2. Step 2: Convert to fraction form
    950.44/1,311.15 = 670.72/x
  3. Step 3: Cross multiply
    950.44x = 1,311.15 × 670.72
  4. Step 4: Simplify right side
    950.44x = 879,414.53
  5. Step 5: Solve for x
    x = 879,414.53/950.44
  6. Step 6: Final answer
    x = 925.27

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Double scale
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1.5x scale

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.