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Finding the Fourth Proportional to 1,062.86, 1,592.90 and 445.70

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Solution

The fourth proportional to 1,062.86, 1,592.90 and 445.70 is: 667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.86 : 1,592.90 = 445.70 : x
  2. Step 2: Convert to fraction form
    1,062.86/1,592.90 = 445.70/x
  3. Step 3: Cross multiply
    1,062.86x = 1,592.90 × 445.70
  4. Step 4: Simplify right side
    1,062.86x = 709,958.96
  5. Step 5: Solve for x
    x = 709,958.96/1,062.86
  6. Step 6: Final answer
    x = 667.97

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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.