Home / 1,182.23-1,631.55-684.98

Finding the Fourth Proportional to 1,182.23, 1,631.55 and 684.98

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Solution

The fourth proportional to 1,182.23, 1,631.55 and 684.98 is: 945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.23 : 1,631.55 = 684.98 : x
  2. Step 2: Convert to fraction form
    1,182.23/1,631.55 = 684.98/x
  3. Step 3: Cross multiply
    1,182.23x = 1,631.55 × 684.98
  4. Step 4: Simplify right side
    1,182.23x = 1,117,570.96
  5. Step 5: Solve for x
    x = 1,117,570.96/1,182.23
  6. Step 6: Final answer
    x = 945.31

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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.