Home / 1,151.12-1,725.44-457.49

Finding the Fourth Proportional to 1,151.12, 1,725.44 and 457.49

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Solution

The fourth proportional to 1,151.12, 1,725.44 and 457.49 is: 685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.12 : 1,725.44 = 457.49 : x
  2. Step 2: Convert to fraction form
    1,151.12/1,725.44 = 457.49/x
  3. Step 3: Cross multiply
    1,151.12x = 1,725.44 × 457.49
  4. Step 4: Simplify right side
    1,151.12x = 789,360.63
  5. Step 5: Solve for x
    x = 789,360.63/1,151.12
  6. Step 6: Final answer
    x = 685.74

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Double scale
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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.