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Finding the Fourth Proportional to 190.31, 287.15 and 183.51

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Solution

The fourth proportional to 190.31, 287.15 and 183.51 is: 276.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.31 : 287.15 = 183.51 : x
  2. Step 2: Convert to fraction form
    190.31/287.15 = 183.51/x
  3. Step 3: Cross multiply
    190.31x = 287.15 × 183.51
  4. Step 4: Simplify right side
    190.31x = 52,693.98
  5. Step 5: Solve for x
    x = 52,693.98/190.31
  6. Step 6: Final answer
    x = 276.89

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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.