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Finding the Fourth Proportional to 1,344.34, 1,855.14 and 738.67

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Solution

The fourth proportional to 1,344.34, 1,855.14 and 738.67 is: 1,019.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.34 : 1,855.14 = 738.67 : x
  2. Step 2: Convert to fraction form
    1,344.34/1,855.14 = 738.67/x
  3. Step 3: Cross multiply
    1,344.34x = 1,855.14 × 738.67
  4. Step 4: Simplify right side
    1,344.34x = 1,370,336.26
  5. Step 5: Solve for x
    x = 1,370,336.26/1,344.34
  6. Step 6: Final answer
    x = 1,019.34

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Half scale
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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.