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Finding the Fourth Proportional to 507.42, 761.01 and 142.23

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Solution

The fourth proportional to 507.42, 761.01 and 142.23 is: 213.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.42 : 761.01 = 142.23 : x
  2. Step 2: Convert to fraction form
    507.42/761.01 = 142.23/x
  3. Step 3: Cross multiply
    507.42x = 761.01 × 142.23
  4. Step 4: Simplify right side
    507.42x = 108,238.45
  5. Step 5: Solve for x
    x = 108,238.45/507.42
  6. Step 6: Final answer
    x = 213.31

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Double scale
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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.