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Finding the Fourth Proportional to 590.38, 818.61 and 570.87

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Solution

The fourth proportional to 590.38, 818.61 and 570.87 is: 791.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.38 : 818.61 = 570.87 : x
  2. Step 2: Convert to fraction form
    590.38/818.61 = 570.87/x
  3. Step 3: Cross multiply
    590.38x = 818.61 × 570.87
  4. Step 4: Simplify right side
    590.38x = 467,319.89
  5. Step 5: Solve for x
    x = 467,319.89/590.38
  6. Step 6: Final answer
    x = 791.56

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.