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Finding the Fourth Proportional to 619.63, 929.54 and 294.82

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Solution

The fourth proportional to 619.63, 929.54 and 294.82 is: 442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.63 : 929.54 = 294.82 : x
  2. Step 2: Convert to fraction form
    619.63/929.54 = 294.82/x
  3. Step 3: Cross multiply
    619.63x = 929.54 × 294.82
  4. Step 4: Simplify right side
    619.63x = 274,046.98
  5. Step 5: Solve for x
    x = 274,046.98/619.63
  6. Step 6: Final answer
    x = 442.28

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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.