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Finding the Fourth Proportional to 190.07, 284.99 and 98.49

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Solution

The fourth proportional to 190.07, 284.99 and 98.49 is: 147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.07 : 284.99 = 98.49 : x
  2. Step 2: Convert to fraction form
    190.07/284.99 = 98.49/x
  3. Step 3: Cross multiply
    190.07x = 284.99 × 98.49
  4. Step 4: Simplify right side
    190.07x = 28,068.67
  5. Step 5: Solve for x
    x = 28,068.67/190.07
  6. Step 6: Final answer
    x = 147.68

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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.