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Finding the Fourth Proportional to 710.14, 979.79 and 461.46

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Solution

The fourth proportional to 710.14, 979.79 and 461.46 is: 636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.14 : 979.79 = 461.46 : x
  2. Step 2: Convert to fraction form
    710.14/979.79 = 461.46/x
  3. Step 3: Cross multiply
    710.14x = 979.79 × 461.46
  4. Step 4: Simplify right side
    710.14x = 452,133.89
  5. Step 5: Solve for x
    x = 452,133.89/710.14
  6. Step 6: Final answer
    x = 636.68

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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.