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Finding the Fourth Proportional to 613.36, 844.59 and 574.21

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Solution

The fourth proportional to 613.36, 844.59 and 574.21 is: 790.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.36 : 844.59 = 574.21 : x
  2. Step 2: Convert to fraction form
    613.36/844.59 = 574.21/x
  3. Step 3: Cross multiply
    613.36x = 844.59 × 574.21
  4. Step 4: Simplify right side
    613.36x = 484,972.02
  5. Step 5: Solve for x
    x = 484,972.02/613.36
  6. Step 6: Final answer
    x = 790.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.