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Finding the Fourth Proportional to 476.26, 656.83 and 328.84

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Solution

The fourth proportional to 476.26, 656.83 and 328.84 is: 453.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.26 : 656.83 = 328.84 : x
  2. Step 2: Convert to fraction form
    476.26/656.83 = 328.84/x
  3. Step 3: Cross multiply
    476.26x = 656.83 × 328.84
  4. Step 4: Simplify right side
    476.26x = 215,991.98
  5. Step 5: Solve for x
    x = 215,991.98/476.26
  6. Step 6: Final answer
    x = 453.52

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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.