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Finding the Fourth Proportional to 292.28, 438.06 and 148.04

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Solution

The fourth proportional to 292.28, 438.06 and 148.04 is: 221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.28 : 438.06 = 148.04 : x
  2. Step 2: Convert to fraction form
    292.28/438.06 = 148.04/x
  3. Step 3: Cross multiply
    292.28x = 438.06 × 148.04
  4. Step 4: Simplify right side
    292.28x = 64,850.40
  5. Step 5: Solve for x
    x = 64,850.40/292.28
  6. Step 6: Final answer
    x = 221.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.