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Finding the Fourth Proportional to 903.33, 1,246.05 and 554.22

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Solution

The fourth proportional to 903.33, 1,246.05 and 554.22 is: 764.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.33 : 1,246.05 = 554.22 : x
  2. Step 2: Convert to fraction form
    903.33/1,246.05 = 554.22/x
  3. Step 3: Cross multiply
    903.33x = 1,246.05 × 554.22
  4. Step 4: Simplify right side
    903.33x = 690,585.83
  5. Step 5: Solve for x
    x = 690,585.83/903.33
  6. Step 6: Final answer
    x = 764.49

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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.