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Finding the Fourth Proportional to 1,094.28, 1,510.12 and 622.20

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Solution

The fourth proportional to 1,094.28, 1,510.12 and 622.20 is: 858.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.28 : 1,510.12 = 622.20 : x
  2. Step 2: Convert to fraction form
    1,094.28/1,510.12 = 622.20/x
  3. Step 3: Cross multiply
    1,094.28x = 1,510.12 × 622.20
  4. Step 4: Simplify right side
    1,094.28x = 939,596.66
  5. Step 5: Solve for x
    x = 939,596.66/1,094.28
  6. Step 6: Final answer
    x = 858.64

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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.