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Finding the Fourth Proportional to 7.14, 10.77 and 7.02

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Solution

The fourth proportional to 7.14, 10.77 and 7.02 is: 10.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.14 : 10.77 = 7.02 : x
  2. Step 2: Convert to fraction form
    7.14/10.77 = 7.02/x
  3. Step 3: Cross multiply
    7.14x = 10.77 × 7.02
  4. Step 4: Simplify right side
    7.14x = 75.61
  5. Step 5: Solve for x
    x = 75.61/7.14
  6. Step 6: Final answer
    x = 10.59

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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.