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Finding the Fourth Proportional to 176.06, 242.93 and 105.20

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Solution

The fourth proportional to 176.06, 242.93 and 105.20 is: 145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.06 : 242.93 = 105.20 : x
  2. Step 2: Convert to fraction form
    176.06/242.93 = 105.20/x
  3. Step 3: Cross multiply
    176.06x = 242.93 × 105.20
  4. Step 4: Simplify right side
    176.06x = 25,556.24
  5. Step 5: Solve for x
    x = 25,556.24/176.06
  6. Step 6: Final answer
    x = 145.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.