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Finding the Fourth Proportional to 1,088.26, 1,501.78 and 622.50

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Solution

The fourth proportional to 1,088.26, 1,501.78 and 622.50 is: 859.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.26 : 1,501.78 = 622.50 : x
  2. Step 2: Convert to fraction form
    1,088.26/1,501.78 = 622.50/x
  3. Step 3: Cross multiply
    1,088.26x = 1,501.78 × 622.50
  4. Step 4: Simplify right side
    1,088.26x = 934,858.05
  5. Step 5: Solve for x
    x = 934,858.05/1,088.26
  6. Step 6: Final answer
    x = 859.04

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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.