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Finding the Fourth Proportional to 476.73, 657.77 and 299.85

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Solution

The fourth proportional to 476.73, 657.77 and 299.85 is: 413.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.73 : 657.77 = 299.85 : x
  2. Step 2: Convert to fraction form
    476.73/657.77 = 299.85/x
  3. Step 3: Cross multiply
    476.73x = 657.77 × 299.85
  4. Step 4: Simplify right side
    476.73x = 197,230.84
  5. Step 5: Solve for x
    x = 197,230.84/476.73
  6. Step 6: Final answer
    x = 413.72

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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.