Home / 780.03-1,076.90-544.12

Finding the Fourth Proportional to 780.03, 1,076.90 and 544.12

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Solution

The fourth proportional to 780.03, 1,076.90 and 544.12 is: 751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    780.03 : 1,076.90 = 544.12 : x
  2. Step 2: Convert to fraction form
    780.03/1,076.90 = 544.12/x
  3. Step 3: Cross multiply
    780.03x = 1,076.90 × 544.12
  4. Step 4: Simplify right side
    780.03x = 585,957.42
  5. Step 5: Solve for x
    x = 585,957.42/780.03
  6. Step 6: Final answer
    x = 751.20

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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.