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Finding the Fourth Proportional to 346.26, 477.45 and 252.84

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Solution

The fourth proportional to 346.26, 477.45 and 252.84 is: 348.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.26 : 477.45 = 252.84 : x
  2. Step 2: Convert to fraction form
    346.26/477.45 = 252.84/x
  3. Step 3: Cross multiply
    346.26x = 477.45 × 252.84
  4. Step 4: Simplify right side
    346.26x = 120,718.46
  5. Step 5: Solve for x
    x = 120,718.46/346.26
  6. Step 6: Final answer
    x = 348.64

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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.