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Finding the Fourth Proportional to 575.21, 862.74 and 164.39

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Solution

The fourth proportional to 575.21, 862.74 and 164.39 is: 246.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.21 : 862.74 = 164.39 : x
  2. Step 2: Convert to fraction form
    575.21/862.74 = 164.39/x
  3. Step 3: Cross multiply
    575.21x = 862.74 × 164.39
  4. Step 4: Simplify right side
    575.21x = 141,821.51
  5. Step 5: Solve for x
    x = 141,821.51/575.21
  6. Step 6: Final answer
    x = 246.55

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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.