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Finding the Fourth Proportional to 1,100.48, 1,650.71 and 928.25

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Solution

The fourth proportional to 1,100.48, 1,650.71 and 928.25 is: 1,392.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.48 : 1,650.71 = 928.25 : x
  2. Step 2: Convert to fraction form
    1,100.48/1,650.71 = 928.25/x
  3. Step 3: Cross multiply
    1,100.48x = 1,650.71 × 928.25
  4. Step 4: Simplify right side
    1,100.48x = 1,532,258.66
  5. Step 5: Solve for x
    x = 1,532,258.66/1,100.48
  6. Step 6: Final answer
    x = 1,392.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.