Home / 1,103.48-1,522.36-631.30

Finding the Fourth Proportional to 1,103.48, 1,522.36 and 631.30

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Solution

The fourth proportional to 1,103.48, 1,522.36 and 631.30 is: 870.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.48 : 1,522.36 = 631.30 : x
  2. Step 2: Convert to fraction form
    1,103.48/1,522.36 = 631.30/x
  3. Step 3: Cross multiply
    1,103.48x = 1,522.36 × 631.30
  4. Step 4: Simplify right side
    1,103.48x = 961,065.87
  5. Step 5: Solve for x
    x = 961,065.87/1,103.48
  6. Step 6: Final answer
    x = 870.94

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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.