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Finding the Fourth Proportional to 710.25, 980.22 and 395.63

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Solution

The fourth proportional to 710.25, 980.22 and 395.63 is: 546.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.25 : 980.22 = 395.63 : x
  2. Step 2: Convert to fraction form
    710.25/980.22 = 395.63/x
  3. Step 3: Cross multiply
    710.25x = 980.22 × 395.63
  4. Step 4: Simplify right side
    710.25x = 387,797.56
  5. Step 5: Solve for x
    x = 387,797.56/710.25
  6. Step 6: Final answer
    x = 546.00

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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.