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Finding the Fourth Proportional to 1,774.12, 2,661.17 and 475.55

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Solution

The fourth proportional to 1,774.12, 2,661.17 and 475.55 is: 713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,774.12 : 2,661.17 = 475.55 : x
  2. Step 2: Convert to fraction form
    1,774.12/2,661.17 = 475.55/x
  3. Step 3: Cross multiply
    1,774.12x = 2,661.17 × 475.55
  4. Step 4: Simplify right side
    1,774.12x = 1,265,519.39
  5. Step 5: Solve for x
    x = 1,265,519.39/1,774.12
  6. Step 6: Final answer
    x = 713.32

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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.