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Finding the Fourth Proportional to 521.49, 719.50 and 324.93

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Solution

The fourth proportional to 521.49, 719.50 and 324.93 is: 448.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.49 : 719.50 = 324.93 : x
  2. Step 2: Convert to fraction form
    521.49/719.50 = 324.93/x
  3. Step 3: Cross multiply
    521.49x = 719.50 × 324.93
  4. Step 4: Simplify right side
    521.49x = 233,787.14
  5. Step 5: Solve for x
    x = 233,787.14/521.49
  6. Step 6: Final answer
    x = 448.31

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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.