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Finding the Fourth Proportional to 671.57, 926.76 and 376.89

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Solution

The fourth proportional to 671.57, 926.76 and 376.89 is: 520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.57 : 926.76 = 376.89 : x
  2. Step 2: Convert to fraction form
    671.57/926.76 = 376.89/x
  3. Step 3: Cross multiply
    671.57x = 926.76 × 376.89
  4. Step 4: Simplify right side
    671.57x = 349,286.58
  5. Step 5: Solve for x
    x = 349,286.58/671.57
  6. Step 6: Final answer
    x = 520.10

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1.5x scale

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.