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Finding the Fourth Proportional to 346.95, 478.73 and 214.13

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Solution

The fourth proportional to 346.95, 478.73 and 214.13 is: 295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.95 : 478.73 = 214.13 : x
  2. Step 2: Convert to fraction form
    346.95/478.73 = 214.13/x
  3. Step 3: Cross multiply
    346.95x = 478.73 × 214.13
  4. Step 4: Simplify right side
    346.95x = 102,508.06
  5. Step 5: Solve for x
    x = 102,508.06/346.95
  6. Step 6: Final answer
    x = 295.46

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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.