Home / 1,103.24-1,522.08-630.78

Finding the Fourth Proportional to 1,103.24, 1,522.08 and 630.78

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Solution

The fourth proportional to 1,103.24, 1,522.08 and 630.78 is: 870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.24 : 1,522.08 = 630.78 : x
  2. Step 2: Convert to fraction form
    1,103.24/1,522.08 = 630.78/x
  3. Step 3: Cross multiply
    1,103.24x = 1,522.08 × 630.78
  4. Step 4: Simplify right side
    1,103.24x = 960,097.62
  5. Step 5: Solve for x
    x = 960,097.62/1,103.24
  6. Step 6: Final answer
    x = 870.25

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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.