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Finding the Fourth Proportional to 654.04, 980.64 and 434.43

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Solution

The fourth proportional to 654.04, 980.64 and 434.43 is: 651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.04 : 980.64 = 434.43 : x
  2. Step 2: Convert to fraction form
    654.04/980.64 = 434.43/x
  3. Step 3: Cross multiply
    654.04x = 980.64 × 434.43
  4. Step 4: Simplify right side
    654.04x = 426,019.44
  5. Step 5: Solve for x
    x = 426,019.44/654.04
  6. Step 6: Final answer
    x = 651.36

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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.