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Finding the Fourth Proportional to 713.61, 984.56 and 492.48

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Solution

The fourth proportional to 713.61, 984.56 and 492.48 is: 679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.61 : 984.56 = 492.48 : x
  2. Step 2: Convert to fraction form
    713.61/984.56 = 492.48/x
  3. Step 3: Cross multiply
    713.61x = 984.56 × 492.48
  4. Step 4: Simplify right side
    713.61x = 484,873.65
  5. Step 5: Solve for x
    x = 484,873.65/713.61
  6. Step 6: Final answer
    x = 679.47

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