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Finding the Fourth Proportional to 357.83, 493.79 and 210.43

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Solution

The fourth proportional to 357.83, 493.79 and 210.43 is: 290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.83 : 493.79 = 210.43 : x
  2. Step 2: Convert to fraction form
    357.83/493.79 = 210.43/x
  3. Step 3: Cross multiply
    357.83x = 493.79 × 210.43
  4. Step 4: Simplify right side
    357.83x = 103,908.23
  5. Step 5: Solve for x
    x = 103,908.23/357.83
  6. Step 6: Final answer
    x = 290.38

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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.