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Finding the Fourth Proportional to 1,112.59, 1,667.75 and 563.11

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Solution

The fourth proportional to 1,112.59, 1,667.75 and 563.11 is: 844.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.59 : 1,667.75 = 563.11 : x
  2. Step 2: Convert to fraction form
    1,112.59/1,667.75 = 563.11/x
  3. Step 3: Cross multiply
    1,112.59x = 1,667.75 × 563.11
  4. Step 4: Simplify right side
    1,112.59x = 939,115.55
  5. Step 5: Solve for x
    x = 939,115.55/1,112.59
  6. Step 6: Final answer
    x = 844.08

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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.