Home / 920.28-1,270.11-527.33

Finding the Fourth Proportional to 920.28, 1,270.11 and 527.33

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Solution

The fourth proportional to 920.28, 1,270.11 and 527.33 is: 727.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.28 : 1,270.11 = 527.33 : x
  2. Step 2: Convert to fraction form
    920.28/1,270.11 = 527.33/x
  3. Step 3: Cross multiply
    920.28x = 1,270.11 × 527.33
  4. Step 4: Simplify right side
    920.28x = 669,767.11
  5. Step 5: Solve for x
    x = 669,767.11/920.28
  6. Step 6: Final answer
    x = 727.79

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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.