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Finding the Fourth Proportional to 158.56, 236.20 and 153.12

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Solution

The fourth proportional to 158.56, 236.20 and 153.12 is: 228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.56 : 236.20 = 153.12 : x
  2. Step 2: Convert to fraction form
    158.56/236.20 = 153.12/x
  3. Step 3: Cross multiply
    158.56x = 236.20 × 153.12
  4. Step 4: Simplify right side
    158.56x = 36,166.94
  5. Step 5: Solve for x
    x = 36,166.94/158.56
  6. Step 6: Final answer
    x = 228.10

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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.