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Finding the Fourth Proportional to 587.26, 809.70 and 476.44

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Solution

The fourth proportional to 587.26, 809.70 and 476.44 is: 656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.26 : 809.70 = 476.44 : x
  2. Step 2: Convert to fraction form
    587.26/809.70 = 476.44/x
  3. Step 3: Cross multiply
    587.26x = 809.70 × 476.44
  4. Step 4: Simplify right side
    587.26x = 385,773.47
  5. Step 5: Solve for x
    x = 385,773.47/587.26
  6. Step 6: Final answer
    x = 656.90

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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.