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Finding the Fourth Proportional to 500.66, 750.81 and 212

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Solution

The fourth proportional to 500.66, 750.81 and 212 is: 317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.66 : 750.81 = 212 : x
  2. Step 2: Convert to fraction form
    500.66/750.81 = 212/x
  3. Step 3: Cross multiply
    500.66x = 750.81 × 212
  4. Step 4: Simplify right side
    500.66x = 159,171.72
  5. Step 5: Solve for x
    x = 159,171.72/500.66
  6. Step 6: Final answer
    x = 317.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.