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Finding the Fourth Proportional to 559.64, 839.33 and 213.01

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Solution

The fourth proportional to 559.64, 839.33 and 213.01 is: 319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.64 : 839.33 = 213.01 : x
  2. Step 2: Convert to fraction form
    559.64/839.33 = 213.01/x
  3. Step 3: Cross multiply
    559.64x = 839.33 × 213.01
  4. Step 4: Simplify right side
    559.64x = 178,785.68
  5. Step 5: Solve for x
    x = 178,785.68/559.64
  6. Step 6: Final answer
    x = 319.47

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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.