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Finding the Fourth Proportional to 476.99, 716.09 and 322.28

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Solution

The fourth proportional to 476.99, 716.09 and 322.28 is: 483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.99 : 716.09 = 322.28 : x
  2. Step 2: Convert to fraction form
    476.99/716.09 = 322.28/x
  3. Step 3: Cross multiply
    476.99x = 716.09 × 322.28
  4. Step 4: Simplify right side
    476.99x = 230,780.79
  5. Step 5: Solve for x
    x = 230,780.79/476.99
  6. Step 6: Final answer
    x = 483.83

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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.