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Finding the Fourth Proportional to 535.27, 801.56 and 448.39

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Solution

The fourth proportional to 535.27, 801.56 and 448.39 is: 671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.27 : 801.56 = 448.39 : x
  2. Step 2: Convert to fraction form
    535.27/801.56 = 448.39/x
  3. Step 3: Cross multiply
    535.27x = 801.56 × 448.39
  4. Step 4: Simplify right side
    535.27x = 359,409.25
  5. Step 5: Solve for x
    x = 359,409.25/535.27
  6. Step 6: Final answer
    x = 671.45

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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.