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Finding the Fourth Proportional to 671.49, 926.43 and 435.63

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Solution

The fourth proportional to 671.49, 926.43 and 435.63 is: 601.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.49 : 926.43 = 435.63 : x
  2. Step 2: Convert to fraction form
    671.49/926.43 = 435.63/x
  3. Step 3: Cross multiply
    671.49x = 926.43 × 435.63
  4. Step 4: Simplify right side
    671.49x = 403,580.70
  5. Step 5: Solve for x
    x = 403,580.70/671.49
  6. Step 6: Final answer
    x = 601.02

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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.