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Finding the Fourth Proportional to 715.71, 988.65 and 576.37

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Solution

The fourth proportional to 715.71, 988.65 and 576.37 is: 796.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.71 : 988.65 = 576.37 : x
  2. Step 2: Convert to fraction form
    715.71/988.65 = 576.37/x
  3. Step 3: Cross multiply
    715.71x = 988.65 × 576.37
  4. Step 4: Simplify right side
    715.71x = 569,828.20
  5. Step 5: Solve for x
    x = 569,828.20/715.71
  6. Step 6: Final answer
    x = 796.17

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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.