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Finding the Fourth Proportional to 383.10, 573.72 and 291.06

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Solution

The fourth proportional to 383.10, 573.72 and 291.06 is: 435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.10 : 573.72 = 291.06 : x
  2. Step 2: Convert to fraction form
    383.10/573.72 = 291.06/x
  3. Step 3: Cross multiply
    383.10x = 573.72 × 291.06
  4. Step 4: Simplify right side
    383.10x = 166,986.94
  5. Step 5: Solve for x
    x = 166,986.94/383.10
  6. Step 6: Final answer
    x = 435.88

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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.