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Finding the Fourth Proportional to 502.94, 756.09 and 412.31

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Solution

The fourth proportional to 502.94, 756.09 and 412.31 is: 619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.94 : 756.09 = 412.31 : x
  2. Step 2: Convert to fraction form
    502.94/756.09 = 412.31/x
  3. Step 3: Cross multiply
    502.94x = 756.09 × 412.31
  4. Step 4: Simplify right side
    502.94x = 311,743.47
  5. Step 5: Solve for x
    x = 311,743.47/502.94
  6. Step 6: Final answer
    x = 619.84

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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.