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Finding the Fourth Proportional to 1,345.96, 2,019.17 and 480.07

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Solution

The fourth proportional to 1,345.96, 2,019.17 and 480.07 is: 720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.96 : 2,019.17 = 480.07 : x
  2. Step 2: Convert to fraction form
    1,345.96/2,019.17 = 480.07/x
  3. Step 3: Cross multiply
    1,345.96x = 2,019.17 × 480.07
  4. Step 4: Simplify right side
    1,345.96x = 969,342.94
  5. Step 5: Solve for x
    x = 969,342.94/1,345.96
  6. Step 6: Final answer
    x = 720.19

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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.