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Finding the Fourth Proportional to 654.80, 980.34 and 501.32

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Solution

The fourth proportional to 654.80, 980.34 and 501.32 is: 750.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.80 : 980.34 = 501.32 : x
  2. Step 2: Convert to fraction form
    654.80/980.34 = 501.32/x
  3. Step 3: Cross multiply
    654.80x = 980.34 × 501.32
  4. Step 4: Simplify right side
    654.80x = 491,464.05
  5. Step 5: Solve for x
    x = 491,464.05/654.80
  6. Step 6: Final answer
    x = 750.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.