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Finding the Fourth Proportional to 890.00, 1,333.82 and 479.44

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Solution

The fourth proportional to 890.00, 1,333.82 and 479.44 is: 718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.00 : 1,333.82 = 479.44 : x
  2. Step 2: Convert to fraction form
    890.00/1,333.82 = 479.44/x
  3. Step 3: Cross multiply
    890.00x = 1,333.82 × 479.44
  4. Step 4: Simplify right side
    890.00x = 639,479.33
  5. Step 5: Solve for x
    x = 639,479.33/890.00
  6. Step 6: Final answer
    x = 718.51

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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.