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Finding the Fourth Proportional to 373.11, 556.15 and 345.42

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Solution

The fourth proportional to 373.11, 556.15 and 345.42 is: 514.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.11 : 556.15 = 345.42 : x
  2. Step 2: Convert to fraction form
    373.11/556.15 = 345.42/x
  3. Step 3: Cross multiply
    373.11x = 556.15 × 345.42
  4. Step 4: Simplify right side
    373.11x = 192,103.61
  5. Step 5: Solve for x
    x = 192,103.61/373.11
  6. Step 6: Final answer
    x = 514.87

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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.