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Finding the Fourth Proportional to 507.18, 760.76 and 141.96

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Solution

The fourth proportional to 507.18, 760.76 and 141.96 is: 212.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.18 : 760.76 = 141.96 : x
  2. Step 2: Convert to fraction form
    507.18/760.76 = 141.96/x
  3. Step 3: Cross multiply
    507.18x = 760.76 × 141.96
  4. Step 4: Simplify right side
    507.18x = 107,997.49
  5. Step 5: Solve for x
    x = 107,997.49/507.18
  6. Step 6: Final answer
    x = 212.94

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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.