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Finding the Fourth Proportional to 377.43, 561.11 and 351.51

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Solution

The fourth proportional to 377.43, 561.11 and 351.51 is: 522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.43 : 561.11 = 351.51 : x
  2. Step 2: Convert to fraction form
    377.43/561.11 = 351.51/x
  3. Step 3: Cross multiply
    377.43x = 561.11 × 351.51
  4. Step 4: Simplify right side
    377.43x = 197,235.78
  5. Step 5: Solve for x
    x = 197,235.78/377.43
  6. Step 6: Final answer
    x = 522.58

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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.