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Finding the Fourth Proportional to 346.88, 477.90 and 248.47

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Solution

The fourth proportional to 346.88, 477.90 and 248.47 is: 342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.88 : 477.90 = 248.47 : x
  2. Step 2: Convert to fraction form
    346.88/477.90 = 248.47/x
  3. Step 3: Cross multiply
    346.88x = 477.90 × 248.47
  4. Step 4: Simplify right side
    346.88x = 118,742.62
  5. Step 5: Solve for x
    x = 118,742.62/346.88
  6. Step 6: Final answer
    x = 342.31

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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.