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Finding the Fourth Proportional to 671.64, 933.06 and 665.63

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Solution

The fourth proportional to 671.64, 933.06 and 665.63 is: 924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.64 : 933.06 = 665.63 : x
  2. Step 2: Convert to fraction form
    671.64/933.06 = 665.63/x
  3. Step 3: Cross multiply
    671.64x = 933.06 × 665.63
  4. Step 4: Simplify right side
    671.64x = 621,072.73
  5. Step 5: Solve for x
    x = 621,072.73/671.64
  6. Step 6: Final answer
    x = 924.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.