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Finding the Fourth Proportional to 590.48, 814.89 and 354.47

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Solution

The fourth proportional to 590.48, 814.89 and 354.47 is: 489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.48 : 814.89 = 354.47 : x
  2. Step 2: Convert to fraction form
    590.48/814.89 = 354.47/x
  3. Step 3: Cross multiply
    590.48x = 814.89 × 354.47
  4. Step 4: Simplify right side
    590.48x = 288,849.98
  5. Step 5: Solve for x
    x = 288,849.98/590.48
  6. Step 6: Final answer
    x = 489.18

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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.