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Finding the Fourth Proportional to 1,867.35, 2,801 and 480.68

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Solution

The fourth proportional to 1,867.35, 2,801 and 480.68 is: 721.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.35 : 2,801 = 480.68 : x
  2. Step 2: Convert to fraction form
    1,867.35/2,801 = 480.68/x
  3. Step 3: Cross multiply
    1,867.35x = 2,801 × 480.68
  4. Step 4: Simplify right side
    1,867.35x = 1,346,384.68
  5. Step 5: Solve for x
    x = 1,346,384.68/1,867.35
  6. Step 6: Final answer
    x = 721.01

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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.