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Finding the Third Proportional to 390 and 593

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Solution

The third proportional to 390 and 593 is: 901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    390 : 593 = 593 : x
  2. Step 2: Convert to fraction form
    390/593 = 593/x
  3. Step 3: Cross multiply
    390x = 593 × 593
  4. Step 4: Simplify right side
    390x = 351,649
  5. Step 5: Solve for x
    x = 351,649/390
  6. Step 6: Final answer
    x = 901.66

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.