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Finding the Fourth Proportional to 508.01, 762.02 and 142.81

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Solution

The fourth proportional to 508.01, 762.02 and 142.81 is: 214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.01 : 762.02 = 142.81 : x
  2. Step 2: Convert to fraction form
    508.01/762.02 = 142.81/x
  3. Step 3: Cross multiply
    508.01x = 762.02 × 142.81
  4. Step 4: Simplify right side
    508.01x = 108,820.27
  5. Step 5: Solve for x
    x = 108,820.27/508.01
  6. Step 6: Final answer
    x = 214.21

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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.