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Finding the Fourth Proportional to 718.70, 983.32 and 716.00

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Solution

The fourth proportional to 718.70, 983.32 and 716.00 is: 979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.70 : 983.32 = 716.00 : x
  2. Step 2: Convert to fraction form
    718.70/983.32 = 716.00/x
  3. Step 3: Cross multiply
    718.70x = 983.32 × 716.00
  4. Step 4: Simplify right side
    718.70x = 704,050.41
  5. Step 5: Solve for x
    x = 704,050.41/718.70
  6. Step 6: Final answer
    x = 979.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.