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Finding the Fourth Proportional to 619.70, 929.69 and 234.95

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Solution

The fourth proportional to 619.70, 929.69 and 234.95 is: 352.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.70 : 929.69 = 234.95 : x
  2. Step 2: Convert to fraction form
    619.70/929.69 = 234.95/x
  3. Step 3: Cross multiply
    619.70x = 929.69 × 234.95
  4. Step 4: Simplify right side
    619.70x = 218,424.84
  5. Step 5: Solve for x
    x = 218,424.84/619.70
  6. Step 6: Final answer
    x = 352.47

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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.