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Finding the Fourth Proportional to 980.34, 1,353.03 and 582.06

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Solution

The fourth proportional to 980.34, 1,353.03 and 582.06 is: 803.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    980.34 : 1,353.03 = 582.06 : x
  2. Step 2: Convert to fraction form
    980.34/1,353.03 = 582.06/x
  3. Step 3: Cross multiply
    980.34x = 1,353.03 × 582.06
  4. Step 4: Simplify right side
    980.34x = 787,544.64
  5. Step 5: Solve for x
    x = 787,544.64/980.34
  6. Step 6: Final answer
    x = 803.34

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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.