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Finding the Fourth Proportional to 376.29, 561.35 and 371.43

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Solution

The fourth proportional to 376.29, 561.35 and 371.43 is: 554.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.29 : 561.35 = 371.43 : x
  2. Step 2: Convert to fraction form
    376.29/561.35 = 371.43/x
  3. Step 3: Cross multiply
    376.29x = 561.35 × 371.43
  4. Step 4: Simplify right side
    376.29x = 208,503.16
  5. Step 5: Solve for x
    x = 208,503.16/376.29
  6. Step 6: Final answer
    x = 554.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.