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Finding the Fourth Proportional to 507.94, 761.42 and 247.64

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Solution

The fourth proportional to 507.94, 761.42 and 247.64 is: 371.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.94 : 761.42 = 247.64 : x
  2. Step 2: Convert to fraction form
    507.94/761.42 = 247.64/x
  3. Step 3: Cross multiply
    507.94x = 761.42 × 247.64
  4. Step 4: Simplify right side
    507.94x = 188,554.86
  5. Step 5: Solve for x
    x = 188,554.86/507.94
  6. Step 6: Final answer
    x = 371.22

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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.