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Finding the Fourth Proportional to 590.09, 883.91 and 521.78

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Solution

The fourth proportional to 590.09, 883.91 and 521.78 is: 781.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.09 : 883.91 = 521.78 : x
  2. Step 2: Convert to fraction form
    590.09/883.91 = 521.78/x
  3. Step 3: Cross multiply
    590.09x = 883.91 × 521.78
  4. Step 4: Simplify right side
    590.09x = 461,203.44
  5. Step 5: Solve for x
    x = 461,203.44/590.09
  6. Step 6: Final answer
    x = 781.59

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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.