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Finding the Fourth Proportional to 663.06, 993.38 and 624.02

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Solution

The fourth proportional to 663.06, 993.38 and 624.02 is: 934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.06 : 993.38 = 624.02 : x
  2. Step 2: Convert to fraction form
    663.06/993.38 = 624.02/x
  3. Step 3: Cross multiply
    663.06x = 993.38 × 624.02
  4. Step 4: Simplify right side
    663.06x = 619,888.99
  5. Step 5: Solve for x
    x = 619,888.99/663.06
  6. Step 6: Final answer
    x = 934.89

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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.