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Finding the Fourth Proportional to 903.34, 1,245.49 and 761.19

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Solution

The fourth proportional to 903.34, 1,245.49 and 761.19 is: 1,049.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.34 : 1,245.49 = 761.19 : x
  2. Step 2: Convert to fraction form
    903.34/1,245.49 = 761.19/x
  3. Step 3: Cross multiply
    903.34x = 1,245.49 × 761.19
  4. Step 4: Simplify right side
    903.34x = 948,047.96
  5. Step 5: Solve for x
    x = 948,047.96/903.34
  6. Step 6: Final answer
    x = 1,049.49

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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.