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Finding the Fourth Proportional to 993.34, 1,489.98 and 262.92

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Solution

The fourth proportional to 993.34, 1,489.98 and 262.92 is: 394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.34 : 1,489.98 = 262.92 : x
  2. Step 2: Convert to fraction form
    993.34/1,489.98 = 262.92/x
  3. Step 3: Cross multiply
    993.34x = 1,489.98 × 262.92
  4. Step 4: Simplify right side
    993.34x = 391,744.23
  5. Step 5: Solve for x
    x = 391,744.23/993.34
  6. Step 6: Final answer
    x = 394.37

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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.