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Finding the Fourth Proportional to 647.08, 892.52 and 425.96

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Solution

The fourth proportional to 647.08, 892.52 and 425.96 is: 587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.08 : 892.52 = 425.96 : x
  2. Step 2: Convert to fraction form
    647.08/892.52 = 425.96/x
  3. Step 3: Cross multiply
    647.08x = 892.52 × 425.96
  4. Step 4: Simplify right side
    647.08x = 380,177.82
  5. Step 5: Solve for x
    x = 380,177.82/647.08
  6. Step 6: Final answer
    x = 587.53

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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.