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Finding the Fourth Proportional to 1,015.00, 1,400.67 and 622.04

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Solution

The fourth proportional to 1,015.00, 1,400.67 and 622.04 is: 858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.00 : 1,400.67 = 622.04 : x
  2. Step 2: Convert to fraction form
    1,015.00/1,400.67 = 622.04/x
  3. Step 3: Cross multiply
    1,015.00x = 1,400.67 × 622.04
  4. Step 4: Simplify right side
    1,015.00x = 871,265.76
  5. Step 5: Solve for x
    x = 871,265.76/1,015.00
  6. Step 6: Final answer
    x = 858.39

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1.5x scale

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.