Home / 1,206.51-1,664.90-675.30

Finding the Fourth Proportional to 1,206.51, 1,664.90 and 675.30

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Solution

The fourth proportional to 1,206.51, 1,664.90 and 675.30 is: 931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.51 : 1,664.90 = 675.30 : x
  2. Step 2: Convert to fraction form
    1,206.51/1,664.90 = 675.30/x
  3. Step 3: Cross multiply
    1,206.51x = 1,664.90 × 675.30
  4. Step 4: Simplify right side
    1,206.51x = 1,124,306.80
  5. Step 5: Solve for x
    x = 1,124,306.80/1,206.51
  6. Step 6: Final answer
    x = 931.87

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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.