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Finding the Fourth Proportional to 910.17, 1,365.42 and 448.27

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Solution

The fourth proportional to 910.17, 1,365.42 and 448.27 is: 672.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.17 : 1,365.42 = 448.27 : x
  2. Step 2: Convert to fraction form
    910.17/1,365.42 = 448.27/x
  3. Step 3: Cross multiply
    910.17x = 1,365.42 × 448.27
  4. Step 4: Simplify right side
    910.17x = 612,075.09
  5. Step 5: Solve for x
    x = 612,075.09/910.17
  6. Step 6: Final answer
    x = 672.48

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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.