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Finding the Fourth Proportional to 1,115.38, 1,674.61 and 567.94

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Solution

The fourth proportional to 1,115.38, 1,674.61 and 567.94 is: 852.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.38 : 1,674.61 = 567.94 : x
  2. Step 2: Convert to fraction form
    1,115.38/1,674.61 = 567.94/x
  3. Step 3: Cross multiply
    1,115.38x = 1,674.61 × 567.94
  4. Step 4: Simplify right side
    1,115.38x = 951,078.00
  5. Step 5: Solve for x
    x = 951,078.00/1,115.38
  6. Step 6: Final answer
    x = 852.69

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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.