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Finding the Fourth Proportional to 975.43, 1,464.77 and 936.15

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Solution

The fourth proportional to 975.43, 1,464.77 and 936.15 is: 1,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.43 : 1,464.77 = 936.15 : x
  2. Step 2: Convert to fraction form
    975.43/1,464.77 = 936.15/x
  3. Step 3: Cross multiply
    975.43x = 1,464.77 × 936.15
  4. Step 4: Simplify right side
    975.43x = 1,371,244.44
  5. Step 5: Solve for x
    x = 1,371,244.44/975.43
  6. Step 6: Final answer
    x = 1,405.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.