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Finding the Fourth Proportional to 346.21, 477.30 and 235.49

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Solution

The fourth proportional to 346.21, 477.30 and 235.49 is: 324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.21 : 477.30 = 235.49 : x
  2. Step 2: Convert to fraction form
    346.21/477.30 = 235.49/x
  3. Step 3: Cross multiply
    346.21x = 477.30 × 235.49
  4. Step 4: Simplify right side
    346.21x = 112,398.78
  5. Step 5: Solve for x
    x = 112,398.78/346.21
  6. Step 6: Final answer
    x = 324.66

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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.