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Finding the Fourth Proportional to 407.34, 608.42 and 349.73

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Solution

The fourth proportional to 407.34, 608.42 and 349.73 is: 522.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.34 : 608.42 = 349.73 : x
  2. Step 2: Convert to fraction form
    407.34/608.42 = 349.73/x
  3. Step 3: Cross multiply
    407.34x = 608.42 × 349.73
  4. Step 4: Simplify right side
    407.34x = 212,782.73
  5. Step 5: Solve for x
    x = 212,782.73/407.34
  6. Step 6: Final answer
    x = 522.37

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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.