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Finding the Fourth Proportional to 505.24, 758.00 and 212.59

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Solution

The fourth proportional to 505.24, 758.00 and 212.59 is: 318.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.24 : 758.00 = 212.59 : x
  2. Step 2: Convert to fraction form
    505.24/758.00 = 212.59/x
  3. Step 3: Cross multiply
    505.24x = 758.00 × 212.59
  4. Step 4: Simplify right side
    505.24x = 161,143.49
  5. Step 5: Solve for x
    x = 161,143.49/505.24
  6. Step 6: Final answer
    x = 318.94

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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.