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Finding the Fourth Proportional to 708.62, 979.02 and 604.80

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Solution

The fourth proportional to 708.62, 979.02 and 604.80 is: 835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.62 : 979.02 = 604.80 : x
  2. Step 2: Convert to fraction form
    708.62/979.02 = 604.80/x
  3. Step 3: Cross multiply
    708.62x = 979.02 × 604.80
  4. Step 4: Simplify right side
    708.62x = 592,111.30
  5. Step 5: Solve for x
    x = 592,111.30/708.62
  6. Step 6: Final answer
    x = 835.59

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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.