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Finding the Fourth Proportional to 319.79, 479.50 and 183.10

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Solution

The fourth proportional to 319.79, 479.50 and 183.10 is: 274.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.79 : 479.50 = 183.10 : x
  2. Step 2: Convert to fraction form
    319.79/479.50 = 183.10/x
  3. Step 3: Cross multiply
    319.79x = 479.50 × 183.10
  4. Step 4: Simplify right side
    319.79x = 87,796.45
  5. Step 5: Solve for x
    x = 87,796.45/319.79
  6. Step 6: Final answer
    x = 274.54

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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.