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Finding the Fourth Proportional to 1,667.56, 2,500.50 and 556.59

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Solution

The fourth proportional to 1,667.56, 2,500.50 and 556.59 is: 834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.56 : 2,500.50 = 556.59 : x
  2. Step 2: Convert to fraction form
    1,667.56/2,500.50 = 556.59/x
  3. Step 3: Cross multiply
    1,667.56x = 2,500.50 × 556.59
  4. Step 4: Simplify right side
    1,667.56x = 1,391,740.79
  5. Step 5: Solve for x
    x = 1,391,740.79/1,667.56
  6. Step 6: Final answer
    x = 834.60

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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.