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Finding the Fourth Proportional to 422.67, 581.83 and 370.12

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Solution

The fourth proportional to 422.67, 581.83 and 370.12 is: 509.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.67 : 581.83 = 370.12 : x
  2. Step 2: Convert to fraction form
    422.67/581.83 = 370.12/x
  3. Step 3: Cross multiply
    422.67x = 581.83 × 370.12
  4. Step 4: Simplify right side
    422.67x = 215,347.71
  5. Step 5: Solve for x
    x = 215,347.71/422.67
  6. Step 6: Final answer
    x = 509.50

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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.