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Finding the Fourth Proportional to 663.58, 994.18 and 624.54

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Solution

The fourth proportional to 663.58, 994.18 and 624.54 is: 935.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.58 : 994.18 = 624.54 : x
  2. Step 2: Convert to fraction form
    663.58/994.18 = 624.54/x
  3. Step 3: Cross multiply
    663.58x = 994.18 × 624.54
  4. Step 4: Simplify right side
    663.58x = 620,905.18
  5. Step 5: Solve for x
    x = 620,905.18/663.58
  6. Step 6: Final answer
    x = 935.69

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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.