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Finding the Fourth Proportional to 476.30, 657.27 and 299.30

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Solution

The fourth proportional to 476.30, 657.27 and 299.30 is: 413.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.30 : 657.27 = 299.30 : x
  2. Step 2: Convert to fraction form
    476.30/657.27 = 299.30/x
  3. Step 3: Cross multiply
    476.30x = 657.27 × 299.30
  4. Step 4: Simplify right side
    476.30x = 196,717.62
  5. Step 5: Solve for x
    x = 196,717.62/476.30
  6. Step 6: Final answer
    x = 413.01

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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.