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Finding the Fourth Proportional to 718.14, 984.32 and 715.04

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Solution

The fourth proportional to 718.14, 984.32 and 715.04 is: 980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.14 : 984.32 = 715.04 : x
  2. Step 2: Convert to fraction form
    718.14/984.32 = 715.04/x
  3. Step 3: Cross multiply
    718.14x = 984.32 × 715.04
  4. Step 4: Simplify right side
    718.14x = 703,828.17
  5. Step 5: Solve for x
    x = 703,828.17/718.14
  6. Step 6: Final answer
    x = 980.07

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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.