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Finding the Fourth Proportional to 720.27, 993.56 and 496.17

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Solution

The fourth proportional to 720.27, 993.56 and 496.17 is: 684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.27 : 993.56 = 496.17 : x
  2. Step 2: Convert to fraction form
    720.27/993.56 = 496.17/x
  3. Step 3: Cross multiply
    720.27x = 993.56 × 496.17
  4. Step 4: Simplify right side
    720.27x = 492,972.18
  5. Step 5: Solve for x
    x = 492,972.18/720.27
  6. Step 6: Final answer
    x = 684.43

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Double scale
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1.5x scale

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.