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Finding the Fourth Proportional to 1,561.23, 2,342.07 and 573.91

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Solution

The fourth proportional to 1,561.23, 2,342.07 and 573.91 is: 860.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.23 : 2,342.07 = 573.91 : x
  2. Step 2: Convert to fraction form
    1,561.23/2,342.07 = 573.91/x
  3. Step 3: Cross multiply
    1,561.23x = 2,342.07 × 573.91
  4. Step 4: Simplify right side
    1,561.23x = 1,344,131.54
  5. Step 5: Solve for x
    x = 1,344,131.54/1,561.23
  6. Step 6: Final answer
    x = 860.94

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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.