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Finding the Fourth Proportional to 376.97, 520.70 and 266.94

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Solution

The fourth proportional to 376.97, 520.70 and 266.94 is: 368.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.97 : 520.70 = 266.94 : x
  2. Step 2: Convert to fraction form
    376.97/520.70 = 266.94/x
  3. Step 3: Cross multiply
    376.97x = 520.70 × 266.94
  4. Step 4: Simplify right side
    376.97x = 138,994.32
  5. Step 5: Solve for x
    x = 138,994.32/376.97
  6. Step 6: Final answer
    x = 368.72

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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.