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Finding the Fourth Proportional to 373.49, 559.83 and 319.22

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Solution

The fourth proportional to 373.49, 559.83 and 319.22 is: 478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.49 : 559.83 = 319.22 : x
  2. Step 2: Convert to fraction form
    373.49/559.83 = 319.22/x
  3. Step 3: Cross multiply
    373.49x = 559.83 × 319.22
  4. Step 4: Simplify right side
    373.49x = 178,708.93
  5. Step 5: Solve for x
    x = 178,708.93/373.49
  6. Step 6: Final answer
    x = 478.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.