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Finding the Fourth Proportional to 624.67, 936.45 and 316.09

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Solution

The fourth proportional to 624.67, 936.45 and 316.09 is: 473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.67 : 936.45 = 316.09 : x
  2. Step 2: Convert to fraction form
    624.67/936.45 = 316.09/x
  3. Step 3: Cross multiply
    624.67x = 936.45 × 316.09
  4. Step 4: Simplify right side
    624.67x = 296,002.48
  5. Step 5: Solve for x
    x = 296,002.48/624.67
  6. Step 6: Final answer
    x = 473.85

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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.