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Finding the Fourth Proportional to 1,457.48, 2,186.26 and 483.60

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Solution

The fourth proportional to 1,457.48, 2,186.26 and 483.60 is: 725.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.48 : 2,186.26 = 483.60 : x
  2. Step 2: Convert to fraction form
    1,457.48/2,186.26 = 483.60/x
  3. Step 3: Cross multiply
    1,457.48x = 2,186.26 × 483.60
  4. Step 4: Simplify right side
    1,457.48x = 1,057,275.34
  5. Step 5: Solve for x
    x = 1,057,275.34/1,457.48
  6. Step 6: Final answer
    x = 725.41

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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.