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Finding the Fourth Proportional to 716.37, 988.20 and 464.20

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Solution

The fourth proportional to 716.37, 988.20 and 464.20 is: 640.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.37 : 988.20 = 464.20 : x
  2. Step 2: Convert to fraction form
    716.37/988.20 = 464.20/x
  3. Step 3: Cross multiply
    716.37x = 988.20 × 464.20
  4. Step 4: Simplify right side
    716.37x = 458,722.44
  5. Step 5: Solve for x
    x = 458,722.44/716.37
  6. Step 6: Final answer
    x = 640.34

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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.