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Finding the Fourth Proportional to 710.49, 980.11 and 461.95

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Solution

The fourth proportional to 710.49, 980.11 and 461.95 is: 637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.49 : 980.11 = 461.95 : x
  2. Step 2: Convert to fraction form
    710.49/980.11 = 461.95/x
  3. Step 3: Cross multiply
    710.49x = 980.11 × 461.95
  4. Step 4: Simplify right side
    710.49x = 452,759.94
  5. Step 5: Solve for x
    x = 452,759.94/710.49
  6. Step 6: Final answer
    x = 637.25

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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.