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Finding the Fourth Proportional to 1,778.34, 2,667.87 and 624.18

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Solution

The fourth proportional to 1,778.34, 2,667.87 and 624.18 is: 936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.34 : 2,667.87 = 624.18 : x
  2. Step 2: Convert to fraction form
    1,778.34/2,667.87 = 624.18/x
  3. Step 3: Cross multiply
    1,778.34x = 2,667.87 × 624.18
  4. Step 4: Simplify right side
    1,778.34x = 1,665,231.10
  5. Step 5: Solve for x
    x = 1,665,231.10/1,778.34
  6. Step 6: Final answer
    x = 936.40

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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.