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Finding the Fourth Proportional to 569.59, 785.11 and 445.03

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Solution

The fourth proportional to 569.59, 785.11 and 445.03 is: 613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.59 : 785.11 = 445.03 : x
  2. Step 2: Convert to fraction form
    569.59/785.11 = 445.03/x
  3. Step 3: Cross multiply
    569.59x = 785.11 × 445.03
  4. Step 4: Simplify right side
    569.59x = 349,396.39
  5. Step 5: Solve for x
    x = 349,396.39/569.59
  6. Step 6: Final answer
    x = 613.42

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Double scale
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Similar ratio
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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.