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Finding the Fourth Proportional to 445.70, 614.55 and 375.65

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Solution

The fourth proportional to 445.70, 614.55 and 375.65 is: 517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.70 : 614.55 = 375.65 : x
  2. Step 2: Convert to fraction form
    445.70/614.55 = 375.65/x
  3. Step 3: Cross multiply
    445.70x = 614.55 × 375.65
  4. Step 4: Simplify right side
    445.70x = 230,852.63
  5. Step 5: Solve for x
    x = 230,852.63/445.70
  6. Step 6: Final answer
    x = 517.96

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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.