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Finding the Fourth Proportional to 346.42, 477.95 and 222.16

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Solution

The fourth proportional to 346.42, 477.95 and 222.16 is: 306.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.42 : 477.95 = 222.16 : x
  2. Step 2: Convert to fraction form
    346.42/477.95 = 222.16/x
  3. Step 3: Cross multiply
    346.42x = 477.95 × 222.16
  4. Step 4: Simplify right side
    346.42x = 106,180.26
  5. Step 5: Solve for x
    x = 106,180.26/346.42
  6. Step 6: Final answer
    x = 306.51

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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.