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Finding the Fourth Proportional to 581.67, 872.55 and 338.22

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Solution

The fourth proportional to 581.67, 872.55 and 338.22 is: 507.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.67 : 872.55 = 338.22 : x
  2. Step 2: Convert to fraction form
    581.67/872.55 = 338.22/x
  3. Step 3: Cross multiply
    581.67x = 872.55 × 338.22
  4. Step 4: Simplify right side
    581.67x = 295,113.86
  5. Step 5: Solve for x
    x = 295,113.86/581.67
  6. Step 6: Final answer
    x = 507.36

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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.