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Finding the Fourth Proportional to 378.11, 563.22 and 373.25

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Solution

The fourth proportional to 378.11, 563.22 and 373.25 is: 555.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.11 : 563.22 = 373.25 : x
  2. Step 2: Convert to fraction form
    378.11/563.22 = 373.25/x
  3. Step 3: Cross multiply
    378.11x = 563.22 × 373.25
  4. Step 4: Simplify right side
    378.11x = 210,219.05
  5. Step 5: Solve for x
    x = 210,219.05/378.11
  6. Step 6: Final answer
    x = 555.98

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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.