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Finding the Fourth Proportional to 190.31, 285.47 and 60.35

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Solution

The fourth proportional to 190.31, 285.47 and 60.35 is: 90.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.31 : 285.47 = 60.35 : x
  2. Step 2: Convert to fraction form
    190.31/285.47 = 60.35/x
  3. Step 3: Cross multiply
    190.31x = 285.47 × 60.35
  4. Step 4: Simplify right side
    190.31x = 17,226.39
  5. Step 5: Solve for x
    x = 17,226.39/190.31
  6. Step 6: Final answer
    x = 90.52

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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.