Home / 1,286.51-1,929.97-464.70

Finding the Fourth Proportional to 1,286.51, 1,929.97 and 464.70

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Solution

The fourth proportional to 1,286.51, 1,929.97 and 464.70 is: 697.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.51 : 1,929.97 = 464.70 : x
  2. Step 2: Convert to fraction form
    1,286.51/1,929.97 = 464.70/x
  3. Step 3: Cross multiply
    1,286.51x = 1,929.97 × 464.70
  4. Step 4: Simplify right side
    1,286.51x = 896,857.06
  5. Step 5: Solve for x
    x = 896,857.06/1,286.51
  6. Step 6: Final answer
    x = 697.12

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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.