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Finding the Fourth Proportional to 445.53, 670.76 and 369.66

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Solution

The fourth proportional to 445.53, 670.76 and 369.66 is: 556.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.53 : 670.76 = 369.66 : x
  2. Step 2: Convert to fraction form
    445.53/670.76 = 369.66/x
  3. Step 3: Cross multiply
    445.53x = 670.76 × 369.66
  4. Step 4: Simplify right side
    445.53x = 247,951.29
  5. Step 5: Solve for x
    x = 247,951.29/445.53
  6. Step 6: Final answer
    x = 556.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.