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Finding the Fourth Proportional to 671.71, 926.94 and 376.98

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Solution

The fourth proportional to 671.71, 926.94 and 376.98 is: 520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.71 : 926.94 = 376.98 : x
  2. Step 2: Convert to fraction form
    671.71/926.94 = 376.98/x
  3. Step 3: Cross multiply
    671.71x = 926.94 × 376.98
  4. Step 4: Simplify right side
    671.71x = 349,440.16
  5. Step 5: Solve for x
    x = 349,440.16/671.71
  6. Step 6: Final answer
    x = 520.22

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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.