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Finding the Fourth Proportional to 10.74, 14.76 and 10.68

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Solution

The fourth proportional to 10.74, 14.76 and 10.68 is: 14.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.74 : 14.76 = 10.68 : x
  2. Step 2: Convert to fraction form
    10.74/14.76 = 10.68/x
  3. Step 3: Cross multiply
    10.74x = 14.76 × 10.68
  4. Step 4: Simplify right side
    10.74x = 157.64
  5. Step 5: Solve for x
    x = 157.64/10.74
  6. Step 6: Final answer
    x = 14.68

Related Problems

Find fourth proportional to 5.37, 7.38 and 5.34
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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.