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Finding the Fourth Proportional to 346.32, 477.86 and 206.43

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Solution

The fourth proportional to 346.32, 477.86 and 206.43 is: 284.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.32 : 477.86 = 206.43 : x
  2. Step 2: Convert to fraction form
    346.32/477.86 = 206.43/x
  3. Step 3: Cross multiply
    346.32x = 477.86 × 206.43
  4. Step 4: Simplify right side
    346.32x = 98,646.95
  5. Step 5: Solve for x
    x = 98,646.95/346.32
  6. Step 6: Final answer
    x = 284.84

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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.