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Finding the Fourth Proportional to 357.99, 494.19 and 253.29

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Solution

The fourth proportional to 357.99, 494.19 and 253.29 is: 349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.99 : 494.19 = 253.29 : x
  2. Step 2: Convert to fraction form
    357.99/494.19 = 253.29/x
  3. Step 3: Cross multiply
    357.99x = 494.19 × 253.29
  4. Step 4: Simplify right side
    357.99x = 125,173.39
  5. Step 5: Solve for x
    x = 125,173.39/357.99
  6. Step 6: Final answer
    x = 349.66

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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.