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Finding the Fourth Proportional to 3.43, 4.71 and 3.17

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Solution

The fourth proportional to 3.43, 4.71 and 3.17 is: 4.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.43 : 4.71 = 3.17 : x
  2. Step 2: Convert to fraction form
    3.43/4.71 = 3.17/x
  3. Step 3: Cross multiply
    3.43x = 4.71 × 3.17
  4. Step 4: Simplify right side
    3.43x = 14.94
  5. Step 5: Solve for x
    x = 14.94/3.43
  6. Step 6: Final answer
    x = 4.36

Related Problems

Find fourth proportional to 1.71, 2.36 and 1.59
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Double scale
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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.