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Finding the Fourth Proportional to 404.93, 603.37 and 385.34

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Solution

The fourth proportional to 404.93, 603.37 and 385.34 is: 574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.93 : 603.37 = 385.34 : x
  2. Step 2: Convert to fraction form
    404.93/603.37 = 385.34/x
  3. Step 3: Cross multiply
    404.93x = 603.37 × 385.34
  4. Step 4: Simplify right side
    404.93x = 232,499.58
  5. Step 5: Solve for x
    x = 232,499.58/404.93
  6. Step 6: Final answer
    x = 574.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.