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Finding the Fourth Proportional to 476.55, 656.91 and 345.33

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Solution

The fourth proportional to 476.55, 656.91 and 345.33 is: 476.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.55 : 656.91 = 345.33 : x
  2. Step 2: Convert to fraction form
    476.55/656.91 = 345.33/x
  3. Step 3: Cross multiply
    476.55x = 656.91 × 345.33
  4. Step 4: Simplify right side
    476.55x = 226,850.73
  5. Step 5: Solve for x
    x = 226,850.73/476.55
  6. Step 6: Final answer
    x = 476.03

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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.