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Finding the Fourth Proportional to 593.20, 890.70 and 411.40

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Solution

The fourth proportional to 593.20, 890.70 and 411.40 is: 617.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.20 : 890.70 = 411.40 : x
  2. Step 2: Convert to fraction form
    593.20/890.70 = 411.40/x
  3. Step 3: Cross multiply
    593.20x = 890.70 × 411.40
  4. Step 4: Simplify right side
    593.20x = 366,433.98
  5. Step 5: Solve for x
    x = 366,433.98/593.20
  6. Step 6: Final answer
    x = 617.72

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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.