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Finding the Fourth Proportional to 952.68, 1,314.24 and 620.96

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Solution

The fourth proportional to 952.68, 1,314.24 and 620.96 is: 856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.68 : 1,314.24 = 620.96 : x
  2. Step 2: Convert to fraction form
    952.68/1,314.24 = 620.96/x
  3. Step 3: Cross multiply
    952.68x = 1,314.24 × 620.96
  4. Step 4: Simplify right side
    952.68x = 816,090.47
  5. Step 5: Solve for x
    x = 816,090.47/952.68
  6. Step 6: Final answer
    x = 856.63

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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.