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Finding the Fourth Proportional to 551.92, 761.76 and 377.32

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Solution

The fourth proportional to 551.92, 761.76 and 377.32 is: 520.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.92 : 761.76 = 377.32 : x
  2. Step 2: Convert to fraction form
    551.92/761.76 = 377.32/x
  3. Step 3: Cross multiply
    551.92x = 761.76 × 377.32
  4. Step 4: Simplify right side
    551.92x = 287,427.28
  5. Step 5: Solve for x
    x = 287,427.28/551.92
  6. Step 6: Final answer
    x = 520.78

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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.