Home / 1,480.12-2,220.40-555.55

Finding the Fourth Proportional to 1,480.12, 2,220.40 and 555.55

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Solution

The fourth proportional to 1,480.12, 2,220.40 and 555.55 is: 833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.12 : 2,220.40 = 555.55 : x
  2. Step 2: Convert to fraction form
    1,480.12/2,220.40 = 555.55/x
  3. Step 3: Cross multiply
    1,480.12x = 2,220.40 × 555.55
  4. Step 4: Simplify right side
    1,480.12x = 1,233,532.12
  5. Step 5: Solve for x
    x = 1,233,532.12/1,480.12
  6. Step 6: Final answer
    x = 833.40

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1.5x scale

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.