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Finding the Fourth Proportional to 346.91, 478.08 and 248.50

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Solution

The fourth proportional to 346.91, 478.08 and 248.50 is: 342.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.91 : 478.08 = 248.50 : x
  2. Step 2: Convert to fraction form
    346.91/478.08 = 248.50/x
  3. Step 3: Cross multiply
    346.91x = 478.08 × 248.50
  4. Step 4: Simplify right side
    346.91x = 118,799.25
  5. Step 5: Solve for x
    x = 118,799.25/346.91
  6. Step 6: Final answer
    x = 342.45

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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.