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Finding the Fourth Proportional to 617.93, 845.91 and 613.53

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Solution

The fourth proportional to 617.93, 845.91 and 613.53 is: 839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.93 : 845.91 = 613.53 : x
  2. Step 2: Convert to fraction form
    617.93/845.91 = 613.53/x
  3. Step 3: Cross multiply
    617.93x = 845.91 × 613.53
  4. Step 4: Simplify right side
    617.93x = 518,991.16
  5. Step 5: Solve for x
    x = 518,991.16/617.93
  6. Step 6: Final answer
    x = 839.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.