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Finding the Fourth Proportional to 128.37, 176.46 and 110.58

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Solution

The fourth proportional to 128.37, 176.46 and 110.58 is: 152.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128.37 : 176.46 = 110.58 : x
  2. Step 2: Convert to fraction form
    128.37/176.46 = 110.58/x
  3. Step 3: Cross multiply
    128.37x = 176.46 × 110.58
  4. Step 4: Simplify right side
    128.37x = 19,512.06
  5. Step 5: Solve for x
    x = 19,512.06/128.37
  6. Step 6: Final answer
    x = 152.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.