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Finding the Fourth Proportional to 581.09, 800.15 and 502.27

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Solution

The fourth proportional to 581.09, 800.15 and 502.27 is: 691.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.09 : 800.15 = 502.27 : x
  2. Step 2: Convert to fraction form
    581.09/800.15 = 502.27/x
  3. Step 3: Cross multiply
    581.09x = 800.15 × 502.27
  4. Step 4: Simplify right side
    581.09x = 401,890.60
  5. Step 5: Solve for x
    x = 401,890.60/581.09
  6. Step 6: Final answer
    x = 691.61

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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.