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Finding the Fourth Proportional to 613.34, 845.43 and 565.64

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Solution

The fourth proportional to 613.34, 845.43 and 565.64 is: 779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.34 : 845.43 = 565.64 : x
  2. Step 2: Convert to fraction form
    613.34/845.43 = 565.64/x
  3. Step 3: Cross multiply
    613.34x = 845.43 × 565.64
  4. Step 4: Simplify right side
    613.34x = 478,209.03
  5. Step 5: Solve for x
    x = 478,209.03/613.34
  6. Step 6: Final answer
    x = 779.68

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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.