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Finding the Fourth Proportional to 4.74, 6.50 and 4.71

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Solution

The fourth proportional to 4.74, 6.50 and 4.71 is: 6.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.74 : 6.50 = 4.71 : x
  2. Step 2: Convert to fraction form
    4.74/6.50 = 4.71/x
  3. Step 3: Cross multiply
    4.74x = 6.50 × 4.71
  4. Step 4: Simplify right side
    4.74x = 30.62
  5. Step 5: Solve for x
    x = 30.62/4.74
  6. Step 6: Final answer
    x = 6.46

Related Problems

Find fourth proportional to 2.37, 3.25 and 2.36
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.