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Finding the Fourth Proportional to 590.39, 814.89 and 403.96

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Solution

The fourth proportional to 590.39, 814.89 and 403.96 is: 557.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.39 : 814.89 = 403.96 : x
  2. Step 2: Convert to fraction form
    590.39/814.89 = 403.96/x
  3. Step 3: Cross multiply
    590.39x = 814.89 × 403.96
  4. Step 4: Simplify right side
    590.39x = 329,182.96
  5. Step 5: Solve for x
    x = 329,182.96/590.39
  6. Step 6: Final answer
    x = 557.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.