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Finding the Fourth Proportional to 478.01, 716.59 and 323.55

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Solution

The fourth proportional to 478.01, 716.59 and 323.55 is: 485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.01 : 716.59 = 323.55 : x
  2. Step 2: Convert to fraction form
    478.01/716.59 = 323.55/x
  3. Step 3: Cross multiply
    478.01x = 716.59 × 323.55
  4. Step 4: Simplify right side
    478.01x = 231,852.69
  5. Step 5: Solve for x
    x = 231,852.69/478.01
  6. Step 6: Final answer
    x = 485.04

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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.