Home / 920.14-1,269.56-547.20

Finding the Fourth Proportional to 920.14, 1,269.56 and 547.20

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Solution

The fourth proportional to 920.14, 1,269.56 and 547.20 is: 755.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.14 : 1,269.56 = 547.20 : x
  2. Step 2: Convert to fraction form
    920.14/1,269.56 = 547.20/x
  3. Step 3: Cross multiply
    920.14x = 1,269.56 × 547.20
  4. Step 4: Simplify right side
    920.14x = 694,703.23
  5. Step 5: Solve for x
    x = 694,703.23/920.14
  6. Step 6: Final answer
    x = 755.00

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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.