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Finding the Fourth Proportional to 1,162.60, 1,740.30 and 674.20

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Solution

The fourth proportional to 1,162.60, 1,740.30 and 674.20 is: 1,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.60 : 1,740.30 = 674.20 : x
  2. Step 2: Convert to fraction form
    1,162.60/1,740.30 = 674.20/x
  3. Step 3: Cross multiply
    1,162.60x = 1,740.30 × 674.20
  4. Step 4: Simplify right side
    1,162.60x = 1,173,310.26
  5. Step 5: Solve for x
    x = 1,173,310.26/1,162.60
  6. Step 6: Final answer
    x = 1,009.21

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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.