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Finding the Fourth Proportional to 619.98, 929.96 and 504.28

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Solution

The fourth proportional to 619.98, 929.96 and 504.28 is: 756.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.98 : 929.96 = 504.28 : x
  2. Step 2: Convert to fraction form
    619.98/929.96 = 504.28/x
  3. Step 3: Cross multiply
    619.98x = 929.96 × 504.28
  4. Step 4: Simplify right side
    619.98x = 468,960.23
  5. Step 5: Solve for x
    x = 468,960.23/619.98
  6. Step 6: Final answer
    x = 756.41

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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.