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Finding the Fourth Proportional to 507.48, 760.59 and 218.58

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Solution

The fourth proportional to 507.48, 760.59 and 218.58 is: 327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.48 : 760.59 = 218.58 : x
  2. Step 2: Convert to fraction form
    507.48/760.59 = 218.58/x
  3. Step 3: Cross multiply
    507.48x = 760.59 × 218.58
  4. Step 4: Simplify right side
    507.48x = 166,249.76
  5. Step 5: Solve for x
    x = 166,249.76/507.48
  6. Step 6: Final answer
    x = 327.60

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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.