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Finding the Fourth Proportional to 936.95, 1,293.01 and 517.32

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Solution

The fourth proportional to 936.95, 1,293.01 and 517.32 is: 713.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.95 : 1,293.01 = 517.32 : x
  2. Step 2: Convert to fraction form
    936.95/1,293.01 = 517.32/x
  3. Step 3: Cross multiply
    936.95x = 1,293.01 × 517.32
  4. Step 4: Simplify right side
    936.95x = 668,903.73
  5. Step 5: Solve for x
    x = 668,903.73/936.95
  6. Step 6: Final answer
    x = 713.91

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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.