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Finding the Fourth Proportional to 577.01, 868.91 and 415.82

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Solution

The fourth proportional to 577.01, 868.91 and 415.82 is: 626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.01 : 868.91 = 415.82 : x
  2. Step 2: Convert to fraction form
    577.01/868.91 = 415.82/x
  3. Step 3: Cross multiply
    577.01x = 868.91 × 415.82
  4. Step 4: Simplify right side
    577.01x = 361,310.16
  5. Step 5: Solve for x
    x = 361,310.16/577.01
  6. Step 6: Final answer
    x = 626.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.