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Finding the Fourth Proportional to 641.04, 960.72 and 624.94

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Solution

The fourth proportional to 641.04, 960.72 and 624.94 is: 936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.04 : 960.72 = 624.94 : x
  2. Step 2: Convert to fraction form
    641.04/960.72 = 624.94/x
  3. Step 3: Cross multiply
    641.04x = 960.72 × 624.94
  4. Step 4: Simplify right side
    641.04x = 600,387.61
  5. Step 5: Solve for x
    x = 600,387.61/641.04
  6. Step 6: Final answer
    x = 936.59

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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.