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Finding the Fourth Proportional to 445.39, 670.55 and 348.41

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Solution

The fourth proportional to 445.39, 670.55 and 348.41 is: 524.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.39 : 670.55 = 348.41 : x
  2. Step 2: Convert to fraction form
    445.39/670.55 = 348.41/x
  3. Step 3: Cross multiply
    445.39x = 670.55 × 348.41
  4. Step 4: Simplify right side
    445.39x = 233,626.33
  5. Step 5: Solve for x
    x = 233,626.33/445.39
  6. Step 6: Final answer
    x = 524.55

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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.