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Finding the Fourth Proportional to 506.70, 759.90 and 141.51

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Solution

The fourth proportional to 506.70, 759.90 and 141.51 is: 212.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.70 : 759.90 = 141.51 : x
  2. Step 2: Convert to fraction form
    506.70/759.90 = 141.51/x
  3. Step 3: Cross multiply
    506.70x = 759.90 × 141.51
  4. Step 4: Simplify right side
    506.70x = 107,533.45
  5. Step 5: Solve for x
    x = 107,533.45/506.70
  6. Step 6: Final answer
    x = 212.22

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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.