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Finding the Fourth Proportional to 40.68, 56 and 37.64

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Solution

The fourth proportional to 40.68, 56 and 37.64 is: 51.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.68 : 56 = 37.64 : x
  2. Step 2: Convert to fraction form
    40.68/56 = 37.64/x
  3. Step 3: Cross multiply
    40.68x = 56 × 37.64
  4. Step 4: Simplify right side
    40.68x = 2,107.84
  5. Step 5: Solve for x
    x = 2,107.84/40.68
  6. Step 6: Final answer
    x = 51.82

Related Problems

Find fourth proportional to 20.34, 28 and 18.82
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.