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Finding the Fourth Proportional to 2,245.43, 3,368.37 and 859.93

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Solution

The fourth proportional to 2,245.43, 3,368.37 and 859.93 is: 1,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.43 : 3,368.37 = 859.93 : x
  2. Step 2: Convert to fraction form
    2,245.43/3,368.37 = 859.93/x
  3. Step 3: Cross multiply
    2,245.43x = 3,368.37 × 859.93
  4. Step 4: Simplify right side
    2,245.43x = 2,896,562.41
  5. Step 5: Solve for x
    x = 2,896,562.41/2,245.43
  6. Step 6: Final answer
    x = 1,289.98

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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.