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Finding the Fourth Proportional to 476.77, 714.99 and 323.54

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Solution

The fourth proportional to 476.77, 714.99 and 323.54 is: 485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.77 : 714.99 = 323.54 : x
  2. Step 2: Convert to fraction form
    476.77/714.99 = 323.54/x
  3. Step 3: Cross multiply
    476.77x = 714.99 × 323.54
  4. Step 4: Simplify right side
    476.77x = 231,327.86
  5. Step 5: Solve for x
    x = 231,327.86/476.77
  6. Step 6: Final answer
    x = 485.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.