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Finding the Fourth Proportional to 671.07, 926.07 and 438.19

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Solution

The fourth proportional to 671.07, 926.07 and 438.19 is: 604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.07 : 926.07 = 438.19 : x
  2. Step 2: Convert to fraction form
    671.07/926.07 = 438.19/x
  3. Step 3: Cross multiply
    671.07x = 926.07 × 438.19
  4. Step 4: Simplify right side
    671.07x = 405,794.61
  5. Step 5: Solve for x
    x = 405,794.61/671.07
  6. Step 6: Final answer
    x = 604.70

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Double scale
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1.5x scale

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.