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Finding the Fourth Proportional to 418.04, 577.38 and 319.58

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Solution

The fourth proportional to 418.04, 577.38 and 319.58 is: 441.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.04 : 577.38 = 319.58 : x
  2. Step 2: Convert to fraction form
    418.04/577.38 = 319.58/x
  3. Step 3: Cross multiply
    418.04x = 577.38 × 319.58
  4. Step 4: Simplify right side
    418.04x = 184,519.10
  5. Step 5: Solve for x
    x = 184,519.10/418.04
  6. Step 6: Final answer
    x = 441.39

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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.