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Finding the Fourth Proportional to 351.49, 484.59 and 253.07

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Solution

The fourth proportional to 351.49, 484.59 and 253.07 is: 348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.49 : 484.59 = 253.07 : x
  2. Step 2: Convert to fraction form
    351.49/484.59 = 253.07/x
  3. Step 3: Cross multiply
    351.49x = 484.59 × 253.07
  4. Step 4: Simplify right side
    351.49x = 122,635.19
  5. Step 5: Solve for x
    x = 122,635.19/351.49
  6. Step 6: Final answer
    x = 348.90

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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.