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Finding the Fourth Proportional to 508.03, 762.08 and 142.81

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Solution

The fourth proportional to 508.03, 762.08 and 142.81 is: 214.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.03 : 762.08 = 142.81 : x
  2. Step 2: Convert to fraction form
    508.03/762.08 = 142.81/x
  3. Step 3: Cross multiply
    508.03x = 762.08 × 142.81
  4. Step 4: Simplify right side
    508.03x = 108,830.03
  5. Step 5: Solve for x
    x = 108,830.03/508.03
  6. Step 6: Final answer
    x = 214.22

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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.