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Finding the Fourth Proportional to 40.69, 56.15 and 23.44

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Solution

The fourth proportional to 40.69, 56.15 and 23.44 is: 32.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.69 : 56.15 = 23.44 : x
  2. Step 2: Convert to fraction form
    40.69/56.15 = 23.44/x
  3. Step 3: Cross multiply
    40.69x = 56.15 × 23.44
  4. Step 4: Simplify right side
    40.69x = 1,316.16
  5. Step 5: Solve for x
    x = 1,316.16/40.69
  6. Step 6: Final answer
    x = 32.35

Related Problems

Find fourth proportional to 20.35, 28.08 and 11.72
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Double scale
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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.