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Finding the Fourth Proportional to 158.63, 236.86 and 148.30

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Solution

The fourth proportional to 158.63, 236.86 and 148.30 is: 221.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.63 : 236.86 = 148.30 : x
  2. Step 2: Convert to fraction form
    158.63/236.86 = 148.30/x
  3. Step 3: Cross multiply
    158.63x = 236.86 × 148.30
  4. Step 4: Simplify right side
    158.63x = 35,125.38
  5. Step 5: Solve for x
    x = 35,125.38/158.63
  6. Step 6: Final answer
    x = 221.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.