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Finding the Fourth Proportional to 569.96, 855.10 and 396.55

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Solution

The fourth proportional to 569.96, 855.10 and 396.55 is: 594.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.96 : 855.10 = 396.55 : x
  2. Step 2: Convert to fraction form
    569.96/855.10 = 396.55/x
  3. Step 3: Cross multiply
    569.96x = 855.10 × 396.55
  4. Step 4: Simplify right side
    569.96x = 339,085.63
  5. Step 5: Solve for x
    x = 339,085.63/569.96
  6. Step 6: Final answer
    x = 594.93

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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.