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Finding the Fourth Proportional to 520.95, 719.04 and 324.35

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Solution

The fourth proportional to 520.95, 719.04 and 324.35 is: 447.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.95 : 719.04 = 324.35 : x
  2. Step 2: Convert to fraction form
    520.95/719.04 = 324.35/x
  3. Step 3: Cross multiply
    520.95x = 719.04 × 324.35
  4. Step 4: Simplify right side
    520.95x = 233,217.03
  5. Step 5: Solve for x
    x = 233,217.03/520.95
  6. Step 6: Final answer
    x = 447.68

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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.