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Finding the Fourth Proportional to 590.67, 815.22 and 450.55

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Solution

The fourth proportional to 590.67, 815.22 and 450.55 is: 621.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.67 : 815.22 = 450.55 : x
  2. Step 2: Convert to fraction form
    590.67/815.22 = 450.55/x
  3. Step 3: Cross multiply
    590.67x = 815.22 × 450.55
  4. Step 4: Simplify right side
    590.67x = 367,295.12
  5. Step 5: Solve for x
    x = 367,295.12/590.67
  6. Step 6: Final answer
    x = 621.83

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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.