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Finding the Fourth Proportional to 577.58, 865.70 and 454.33

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Solution

The fourth proportional to 577.58, 865.70 and 454.33 is: 680.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.58 : 865.70 = 454.33 : x
  2. Step 2: Convert to fraction form
    577.58/865.70 = 454.33/x
  3. Step 3: Cross multiply
    577.58x = 865.70 × 454.33
  4. Step 4: Simplify right side
    577.58x = 393,306.88
  5. Step 5: Solve for x
    x = 393,306.88/577.58
  6. Step 6: Final answer
    x = 680.96

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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.