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Finding the Fourth Proportional to 1,204.03, 1,660.53 and 830.41

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Solution

The fourth proportional to 1,204.03, 1,660.53 and 830.41 is: 1,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.03 : 1,660.53 = 830.41 : x
  2. Step 2: Convert to fraction form
    1,204.03/1,660.53 = 830.41/x
  3. Step 3: Cross multiply
    1,204.03x = 1,660.53 × 830.41
  4. Step 4: Simplify right side
    1,204.03x = 1,378,920.72
  5. Step 5: Solve for x
    x = 1,378,920.72/1,204.03
  6. Step 6: Final answer
    x = 1,145.25

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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.