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Finding the Fourth Proportional to 117.55, 175.54 and 116.28

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Solution

The fourth proportional to 117.55, 175.54 and 116.28 is: 173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.55 : 175.54 = 116.28 : x
  2. Step 2: Convert to fraction form
    117.55/175.54 = 116.28/x
  3. Step 3: Cross multiply
    117.55x = 175.54 × 116.28
  4. Step 4: Simplify right side
    117.55x = 20,410.91
  5. Step 5: Solve for x
    x = 20,410.91/117.55
  6. Step 6: Final answer
    x = 173.64

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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.