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Finding the Fourth Proportional to 253.30, 349.40 and 183.28

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Solution

The fourth proportional to 253.30, 349.40 and 183.28 is: 252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.30 : 349.40 = 183.28 : x
  2. Step 2: Convert to fraction form
    253.30/349.40 = 183.28/x
  3. Step 3: Cross multiply
    253.30x = 349.40 × 183.28
  4. Step 4: Simplify right side
    253.30x = 64,038.03
  5. Step 5: Solve for x
    x = 64,038.03/253.30
  6. Step 6: Final answer
    x = 252.81

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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.