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Finding the Fourth Proportional to 374.70, 561.91 and 114.62

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Solution

The fourth proportional to 374.70, 561.91 and 114.62 is: 171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.70 : 561.91 = 114.62 : x
  2. Step 2: Convert to fraction form
    374.70/561.91 = 114.62/x
  3. Step 3: Cross multiply
    374.70x = 561.91 × 114.62
  4. Step 4: Simplify right side
    374.70x = 64,406.54
  5. Step 5: Solve for x
    x = 64,406.54/374.70
  6. Step 6: Final answer
    x = 171.89

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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.