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Finding the Fourth Proportional to 374.65, 561.90 and 179.65

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Solution

The fourth proportional to 374.65, 561.90 and 179.65 is: 269.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.65 : 561.90 = 179.65 : x
  2. Step 2: Convert to fraction form
    374.65/561.90 = 179.65/x
  3. Step 3: Cross multiply
    374.65x = 561.90 × 179.65
  4. Step 4: Simplify right side
    374.65x = 100,945.34
  5. Step 5: Solve for x
    x = 100,945.34/374.65
  6. Step 6: Final answer
    x = 269.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.