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Finding the Fourth Proportional to 1,613.91, 2,421.22 and 573.97

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Solution

The fourth proportional to 1,613.91, 2,421.22 and 573.97 is: 861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.91 : 2,421.22 = 573.97 : x
  2. Step 2: Convert to fraction form
    1,613.91/2,421.22 = 573.97/x
  3. Step 3: Cross multiply
    1,613.91x = 2,421.22 × 573.97
  4. Step 4: Simplify right side
    1,613.91x = 1,389,707.64
  5. Step 5: Solve for x
    x = 1,389,707.64/1,613.91
  6. Step 6: Final answer
    x = 861.08

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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.