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Finding the Fourth Proportional to 1,345.82, 2,019.00 and 480.11

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Solution

The fourth proportional to 1,345.82, 2,019.00 and 480.11 is: 720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.82 : 2,019.00 = 480.11 : x
  2. Step 2: Convert to fraction form
    1,345.82/2,019.00 = 480.11/x
  3. Step 3: Cross multiply
    1,345.82x = 2,019.00 × 480.11
  4. Step 4: Simplify right side
    1,345.82x = 969,335.84
  5. Step 5: Solve for x
    x = 969,335.84/1,345.82
  6. Step 6: Final answer
    x = 720.26

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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.