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Finding the Fourth Proportional to 1,778.70, 2,667.84 and 480.27

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Solution

The fourth proportional to 1,778.70, 2,667.84 and 480.27 is: 720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.70 : 2,667.84 = 480.27 : x
  2. Step 2: Convert to fraction form
    1,778.70/2,667.84 = 480.27/x
  3. Step 3: Cross multiply
    1,778.70x = 2,667.84 × 480.27
  4. Step 4: Simplify right side
    1,778.70x = 1,281,283.52
  5. Step 5: Solve for x
    x = 1,281,283.52/1,778.70
  6. Step 6: Final answer
    x = 720.35

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1.5x scale

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.