Home / 1,118.04-1,677.90-630.60

Finding the Fourth Proportional to 1,118.04, 1,677.90 and 630.60

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Solution

The fourth proportional to 1,118.04, 1,677.90 and 630.60 is: 946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.04 : 1,677.90 = 630.60 : x
  2. Step 2: Convert to fraction form
    1,118.04/1,677.90 = 630.60/x
  3. Step 3: Cross multiply
    1,118.04x = 1,677.90 × 630.60
  4. Step 4: Simplify right side
    1,118.04x = 1,058,083.74
  5. Step 5: Solve for x
    x = 1,058,083.74/1,118.04
  6. Step 6: Final answer
    x = 946.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.