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Finding the Fourth Proportional to 99.84, 150.44 and 97.40

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Solution

The fourth proportional to 99.84, 150.44 and 97.40 is: 146.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.84 : 150.44 = 97.40 : x
  2. Step 2: Convert to fraction form
    99.84/150.44 = 97.40/x
  3. Step 3: Cross multiply
    99.84x = 150.44 × 97.40
  4. Step 4: Simplify right side
    99.84x = 14,652.86
  5. Step 5: Solve for x
    x = 14,652.86/99.84
  6. Step 6: Final answer
    x = 146.76

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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.