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Finding the Fourth Proportional to 1,106.32, 1,660.23 and 457.05

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Solution

The fourth proportional to 1,106.32, 1,660.23 and 457.05 is: 685.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.32 : 1,660.23 = 457.05 : x
  2. Step 2: Convert to fraction form
    1,106.32/1,660.23 = 457.05/x
  3. Step 3: Cross multiply
    1,106.32x = 1,660.23 × 457.05
  4. Step 4: Simplify right side
    1,106.32x = 758,808.12
  5. Step 5: Solve for x
    x = 758,808.12/1,106.32
  6. Step 6: Final answer
    x = 685.88

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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.