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Finding the Fourth Proportional to 1,457.85, 2,186.07 and 483.63

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Solution

The fourth proportional to 1,457.85, 2,186.07 and 483.63 is: 725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.85 : 2,186.07 = 483.63 : x
  2. Step 2: Convert to fraction form
    1,457.85/2,186.07 = 483.63/x
  3. Step 3: Cross multiply
    1,457.85x = 2,186.07 × 483.63
  4. Step 4: Simplify right side
    1,457.85x = 1,057,249.03
  5. Step 5: Solve for x
    x = 1,057,249.03/1,457.85
  6. Step 6: Final answer
    x = 725.21

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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.