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Finding the Fourth Proportional to 508.48, 762.41 and 161.66

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Solution

The fourth proportional to 508.48, 762.41 and 161.66 is: 242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.48 : 762.41 = 161.66 : x
  2. Step 2: Convert to fraction form
    508.48/762.41 = 161.66/x
  3. Step 3: Cross multiply
    508.48x = 762.41 × 161.66
  4. Step 4: Simplify right side
    508.48x = 123,253.51
  5. Step 5: Solve for x
    x = 123,253.51/508.48
  6. Step 6: Final answer
    x = 242.40

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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.