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Finding the Fourth Proportional to 624.69, 862.07 and 348.69

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Solution

The fourth proportional to 624.69, 862.07 and 348.69 is: 481.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.69 : 862.07 = 348.69 : x
  2. Step 2: Convert to fraction form
    624.69/862.07 = 348.69/x
  3. Step 3: Cross multiply
    624.69x = 862.07 × 348.69
  4. Step 4: Simplify right side
    624.69x = 300,595.19
  5. Step 5: Solve for x
    x = 300,595.19/624.69
  6. Step 6: Final answer
    x = 481.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.