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Finding the Fourth Proportional to 619.11, 927.45 and 424.08

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Solution

The fourth proportional to 619.11, 927.45 and 424.08 is: 635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.11 : 927.45 = 424.08 : x
  2. Step 2: Convert to fraction form
    619.11/927.45 = 424.08/x
  3. Step 3: Cross multiply
    619.11x = 927.45 × 424.08
  4. Step 4: Simplify right side
    619.11x = 393,313.00
  5. Step 5: Solve for x
    x = 393,313.00/619.11
  6. Step 6: Final answer
    x = 635.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.