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Finding the Fourth Proportional to 4.95, 7.40 and 4.50

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Solution

The fourth proportional to 4.95, 7.40 and 4.50 is: 6.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.95 : 7.40 = 4.50 : x
  2. Step 2: Convert to fraction form
    4.95/7.40 = 4.50/x
  3. Step 3: Cross multiply
    4.95x = 7.40 × 4.50
  4. Step 4: Simplify right side
    4.95x = 33.28
  5. Step 5: Solve for x
    x = 33.28/4.95
  6. Step 6: Final answer
    x = 6.72

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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.