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Finding the Fourth Proportional to 671.95, 1,007.92 and 185

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Solution

The fourth proportional to 671.95, 1,007.92 and 185 is: 277.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.95 : 1,007.92 = 185 : x
  2. Step 2: Convert to fraction form
    671.95/1,007.92 = 185/x
  3. Step 3: Cross multiply
    671.95x = 1,007.92 × 185
  4. Step 4: Simplify right side
    671.95x = 186,465.20
  5. Step 5: Solve for x
    x = 186,465.20/671.95
  6. Step 6: Final answer
    x = 277.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.