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Finding the Fourth Proportional to 1,032.78, 1,419.45 and 884.28

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Solution

The fourth proportional to 1,032.78, 1,419.45 and 884.28 is: 1,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.78 : 1,419.45 = 884.28 : x
  2. Step 2: Convert to fraction form
    1,032.78/1,419.45 = 884.28/x
  3. Step 3: Cross multiply
    1,032.78x = 1,419.45 × 884.28
  4. Step 4: Simplify right side
    1,032.78x = 1,255,191.25
  5. Step 5: Solve for x
    x = 1,255,191.25/1,032.78
  6. Step 6: Final answer
    x = 1,215.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.