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Finding the Fourth Proportional to 635.92, 877.44 and 425.86

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Solution

The fourth proportional to 635.92, 877.44 and 425.86 is: 587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.92 : 877.44 = 425.86 : x
  2. Step 2: Convert to fraction form
    635.92/877.44 = 425.86/x
  3. Step 3: Cross multiply
    635.92x = 877.44 × 425.86
  4. Step 4: Simplify right side
    635.92x = 373,666.60
  5. Step 5: Solve for x
    x = 373,666.60/635.92
  6. Step 6: Final answer
    x = 587.60

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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.