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Finding the Fourth Proportional to 507.79, 761.56 and 161.07

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Solution

The fourth proportional to 507.79, 761.56 and 161.07 is: 241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.79 : 761.56 = 161.07 : x
  2. Step 2: Convert to fraction form
    507.79/761.56 = 161.07/x
  3. Step 3: Cross multiply
    507.79x = 761.56 × 161.07
  4. Step 4: Simplify right side
    507.79x = 122,664.47
  5. Step 5: Solve for x
    x = 122,664.47/507.79
  6. Step 6: Final answer
    x = 241.57

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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.