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Finding the Fourth Proportional to 622.68, 859.59 and 360.65

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Solution

The fourth proportional to 622.68, 859.59 and 360.65 is: 497.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.68 : 859.59 = 360.65 : x
  2. Step 2: Convert to fraction form
    622.68/859.59 = 360.65/x
  3. Step 3: Cross multiply
    622.68x = 859.59 × 360.65
  4. Step 4: Simplify right side
    622.68x = 310,006.84
  5. Step 5: Solve for x
    x = 310,006.84/622.68
  6. Step 6: Final answer
    x = 497.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.