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Finding the Fourth Proportional to 715.39, 986.33 and 608.94

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Solution

The fourth proportional to 715.39, 986.33 and 608.94 is: 839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.39 : 986.33 = 608.94 : x
  2. Step 2: Convert to fraction form
    715.39/986.33 = 608.94/x
  3. Step 3: Cross multiply
    715.39x = 986.33 × 608.94
  4. Step 4: Simplify right side
    715.39x = 600,615.79
  5. Step 5: Solve for x
    x = 600,615.79/715.39
  6. Step 6: Final answer
    x = 839.56

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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.