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Finding the Fourth Proportional to 383.30, 574.46 and 253.10

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Solution

The fourth proportional to 383.30, 574.46 and 253.10 is: 379.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.30 : 574.46 = 253.10 : x
  2. Step 2: Convert to fraction form
    383.30/574.46 = 253.10/x
  3. Step 3: Cross multiply
    383.30x = 574.46 × 253.10
  4. Step 4: Simplify right side
    383.30x = 145,395.83
  5. Step 5: Solve for x
    x = 145,395.83/383.30
  6. Step 6: Final answer
    x = 379.33

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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.