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Finding the Fourth Proportional to 593.22, 890.02 and 428.38

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Solution

The fourth proportional to 593.22, 890.02 and 428.38 is: 642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.22 : 890.02 = 428.38 : x
  2. Step 2: Convert to fraction form
    593.22/890.02 = 428.38/x
  3. Step 3: Cross multiply
    593.22x = 890.02 × 428.38
  4. Step 4: Simplify right side
    593.22x = 381,266.77
  5. Step 5: Solve for x
    x = 381,266.77/593.22
  6. Step 6: Final answer
    x = 642.71

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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.