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Finding the Fourth Proportional to 474.89, 656.37 and 376.47

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Solution

The fourth proportional to 474.89, 656.37 and 376.47 is: 520.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.89 : 656.37 = 376.47 : x
  2. Step 2: Convert to fraction form
    474.89/656.37 = 376.47/x
  3. Step 3: Cross multiply
    474.89x = 656.37 × 376.47
  4. Step 4: Simplify right side
    474.89x = 247,103.61
  5. Step 5: Solve for x
    x = 247,103.61/474.89
  6. Step 6: Final answer
    x = 520.34

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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.