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Finding the Fourth Proportional to 912.03, 1,254.95 and 884.70

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Solution

The fourth proportional to 912.03, 1,254.95 and 884.70 is: 1,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.03 : 1,254.95 = 884.70 : x
  2. Step 2: Convert to fraction form
    912.03/1,254.95 = 884.70/x
  3. Step 3: Cross multiply
    912.03x = 1,254.95 × 884.70
  4. Step 4: Simplify right side
    912.03x = 1,110,249.84
  5. Step 5: Solve for x
    x = 1,110,249.84/912.03
  6. Step 6: Final answer
    x = 1,217.34

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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.