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Finding the Fourth Proportional to 577.08, 796.68 and 445.68

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Solution

The fourth proportional to 577.08, 796.68 and 445.68 is: 615.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.08 : 796.68 = 445.68 : x
  2. Step 2: Convert to fraction form
    577.08/796.68 = 445.68/x
  3. Step 3: Cross multiply
    577.08x = 796.68 × 445.68
  4. Step 4: Simplify right side
    577.08x = 355,064.34
  5. Step 5: Solve for x
    x = 355,064.34/577.08
  6. Step 6: Final answer
    x = 615.28

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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.