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Finding the Fourth Proportional to 575.51, 862.89 and 267.20

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Solution

The fourth proportional to 575.51, 862.89 and 267.20 is: 400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.51 : 862.89 = 267.20 : x
  2. Step 2: Convert to fraction form
    575.51/862.89 = 267.20/x
  3. Step 3: Cross multiply
    575.51x = 862.89 × 267.20
  4. Step 4: Simplify right side
    575.51x = 230,564.21
  5. Step 5: Solve for x
    x = 230,564.21/575.51
  6. Step 6: Final answer
    x = 400.63

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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.