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Finding the Fourth Proportional to 1,393.34, 2,090.62 and 662.92

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Solution

The fourth proportional to 1,393.34, 2,090.62 and 662.92 is: 994.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.34 : 2,090.62 = 662.92 : x
  2. Step 2: Convert to fraction form
    1,393.34/2,090.62 = 662.92/x
  3. Step 3: Cross multiply
    1,393.34x = 2,090.62 × 662.92
  4. Step 4: Simplify right side
    1,393.34x = 1,385,913.81
  5. Step 5: Solve for x
    x = 1,385,913.81/1,393.34
  6. Step 6: Final answer
    x = 994.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.