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Finding the Fourth Proportional to 1,065.16, 1,596.53 and 480.61

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Solution

The fourth proportional to 1,065.16, 1,596.53 and 480.61 is: 720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.16 : 1,596.53 = 480.61 : x
  2. Step 2: Convert to fraction form
    1,065.16/1,596.53 = 480.61/x
  3. Step 3: Cross multiply
    1,065.16x = 1,596.53 × 480.61
  4. Step 4: Simplify right side
    1,065.16x = 767,305.88
  5. Step 5: Solve for x
    x = 767,305.88/1,065.16
  6. Step 6: Final answer
    x = 720.37

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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.