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Finding the Fourth Proportional to 910.35, 1,248.26 and 888.48

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Solution

The fourth proportional to 910.35, 1,248.26 and 888.48 is: 1,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.35 : 1,248.26 = 888.48 : x
  2. Step 2: Convert to fraction form
    910.35/1,248.26 = 888.48/x
  3. Step 3: Cross multiply
    910.35x = 1,248.26 × 888.48
  4. Step 4: Simplify right side
    910.35x = 1,109,049.60
  5. Step 5: Solve for x
    x = 1,109,049.60/910.35
  6. Step 6: Final answer
    x = 1,218.27

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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.