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Finding the Fourth Proportional to 714.28, 984.88 and 582.88

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Solution

The fourth proportional to 714.28, 984.88 and 582.88 is: 803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.28 : 984.88 = 582.88 : x
  2. Step 2: Convert to fraction form
    714.28/984.88 = 582.88/x
  3. Step 3: Cross multiply
    714.28x = 984.88 × 582.88
  4. Step 4: Simplify right side
    714.28x = 574,066.85
  5. Step 5: Solve for x
    x = 574,066.85/714.28
  6. Step 6: Final answer
    x = 803.70

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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.