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Finding the Fourth Proportional to 494.59, 741.55 and 216.81

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Solution

The fourth proportional to 494.59, 741.55 and 216.81 is: 325.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.59 : 741.55 = 216.81 : x
  2. Step 2: Convert to fraction form
    494.59/741.55 = 216.81/x
  3. Step 3: Cross multiply
    494.59x = 741.55 × 216.81
  4. Step 4: Simplify right side
    494.59x = 160,774.37
  5. Step 5: Solve for x
    x = 160,774.37/494.59
  6. Step 6: Final answer
    x = 325.07

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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.