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Finding the Fourth Proportional to 581.23, 872.33 and 576.68

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Solution

The fourth proportional to 581.23, 872.33 and 576.68 is: 865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.23 : 872.33 = 576.68 : x
  2. Step 2: Convert to fraction form
    581.23/872.33 = 576.68/x
  3. Step 3: Cross multiply
    581.23x = 872.33 × 576.68
  4. Step 4: Simplify right side
    581.23x = 503,048.02
  5. Step 5: Solve for x
    x = 503,048.02/581.23
  6. Step 6: Final answer
    x = 865.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.