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Finding the Fourth Proportional to 635.22, 875.25 and 427.86

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Solution

The fourth proportional to 635.22, 875.25 and 427.86 is: 589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.22 : 875.25 = 427.86 : x
  2. Step 2: Convert to fraction form
    635.22/875.25 = 427.86/x
  3. Step 3: Cross multiply
    635.22x = 875.25 × 427.86
  4. Step 4: Simplify right side
    635.22x = 374,484.47
  5. Step 5: Solve for x
    x = 374,484.47/635.22
  6. Step 6: Final answer
    x = 589.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.