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Finding the Fourth Proportional to 108.84, 150.28 and 69.51

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Solution

The fourth proportional to 108.84, 150.28 and 69.51 is: 95.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.84 : 150.28 = 69.51 : x
  2. Step 2: Convert to fraction form
    108.84/150.28 = 69.51/x
  3. Step 3: Cross multiply
    108.84x = 150.28 × 69.51
  4. Step 4: Simplify right side
    108.84x = 10,445.96
  5. Step 5: Solve for x
    x = 10,445.96/108.84
  6. Step 6: Final answer
    x = 95.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.