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Finding the Fourth Proportional to 849.83, 1,272.69 and 483.51

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Solution

The fourth proportional to 849.83, 1,272.69 and 483.51 is: 724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.83 : 1,272.69 = 483.51 : x
  2. Step 2: Convert to fraction form
    849.83/1,272.69 = 483.51/x
  3. Step 3: Cross multiply
    849.83x = 1,272.69 × 483.51
  4. Step 4: Simplify right side
    849.83x = 615,358.34
  5. Step 5: Solve for x
    x = 615,358.34/849.83
  6. Step 6: Final answer
    x = 724.10

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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.