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Finding the Fourth Proportional to 15.68, 23.51 and 5.53

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Solution

The fourth proportional to 15.68, 23.51 and 5.53 is: 8.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.68 : 23.51 = 5.53 : x
  2. Step 2: Convert to fraction form
    15.68/23.51 = 5.53/x
  3. Step 3: Cross multiply
    15.68x = 23.51 × 5.53
  4. Step 4: Simplify right side
    15.68x = 130.00
  5. Step 5: Solve for x
    x = 130.00/15.68
  6. Step 6: Final answer
    x = 8.29

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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.