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Finding the Fourth Proportional to 710.88, 980.38 and 461.96

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Solution

The fourth proportional to 710.88, 980.38 and 461.96 is: 637.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.88 : 980.38 = 461.96 : x
  2. Step 2: Convert to fraction form
    710.88/980.38 = 461.96/x
  3. Step 3: Cross multiply
    710.88x = 980.38 × 461.96
  4. Step 4: Simplify right side
    710.88x = 452,896.34
  5. Step 5: Solve for x
    x = 452,896.34/710.88
  6. Step 6: Final answer
    x = 637.09

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1.5x scale

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.