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Finding the Fourth Proportional to 507.10, 760.62 and 218.51

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Solution

The fourth proportional to 507.10, 760.62 and 218.51 is: 327.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.10 : 760.62 = 218.51 : x
  2. Step 2: Convert to fraction form
    507.10/760.62 = 218.51/x
  3. Step 3: Cross multiply
    507.10x = 760.62 × 218.51
  4. Step 4: Simplify right side
    507.10x = 166,203.08
  5. Step 5: Solve for x
    x = 166,203.08/507.10
  6. Step 6: Final answer
    x = 327.75

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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.