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Finding the Fourth Proportional to 9.55, 14.21 and 9.51

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Solution

The fourth proportional to 9.55, 14.21 and 9.51 is: 14.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.55 : 14.21 = 9.51 : x
  2. Step 2: Convert to fraction form
    9.55/14.21 = 9.51/x
  3. Step 3: Cross multiply
    9.55x = 14.21 × 9.51
  4. Step 4: Simplify right side
    9.55x = 135.15
  5. Step 5: Solve for x
    x = 135.15/9.55
  6. Step 6: Final answer
    x = 14.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.