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Finding the Fourth Proportional to 741.52, 1,022.94 and 492.88

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Solution

The fourth proportional to 741.52, 1,022.94 and 492.88 is: 679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.52 : 1,022.94 = 492.88 : x
  2. Step 2: Convert to fraction form
    741.52/1,022.94 = 492.88/x
  3. Step 3: Cross multiply
    741.52x = 1,022.94 × 492.88
  4. Step 4: Simplify right side
    741.52x = 504,186.67
  5. Step 5: Solve for x
    x = 504,186.67/741.52
  6. Step 6: Final answer
    x = 679.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.