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Finding the Fourth Proportional to 507.32, 760.92 and 142.16

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Solution

The fourth proportional to 507.32, 760.92 and 142.16 is: 213.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.32 : 760.92 = 142.16 : x
  2. Step 2: Convert to fraction form
    507.32/760.92 = 142.16/x
  3. Step 3: Cross multiply
    507.32x = 760.92 × 142.16
  4. Step 4: Simplify right side
    507.32x = 108,172.39
  5. Step 5: Solve for x
    x = 108,172.39/507.32
  6. Step 6: Final answer
    x = 213.22

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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.