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Finding the Fourth Proportional to 176.51, 242.91 and 160.98

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Solution

The fourth proportional to 176.51, 242.91 and 160.98 is: 221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.51 : 242.91 = 160.98 : x
  2. Step 2: Convert to fraction form
    176.51/242.91 = 160.98/x
  3. Step 3: Cross multiply
    176.51x = 242.91 × 160.98
  4. Step 4: Simplify right side
    176.51x = 39,103.65
  5. Step 5: Solve for x
    x = 39,103.65/176.51
  6. Step 6: Final answer
    x = 221.54

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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.