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Finding the Fourth Proportional to 593.88, 887.42 and 428.55

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Solution

The fourth proportional to 593.88, 887.42 and 428.55 is: 640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.88 : 887.42 = 428.55 : x
  2. Step 2: Convert to fraction form
    593.88/887.42 = 428.55/x
  3. Step 3: Cross multiply
    593.88x = 887.42 × 428.55
  4. Step 4: Simplify right side
    593.88x = 380,301.70
  5. Step 5: Solve for x
    x = 380,301.70/593.88
  6. Step 6: Final answer
    x = 640.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.