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Finding the Fourth Proportional to 535.68, 738.72 and 465.48

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Solution

The fourth proportional to 535.68, 738.72 and 465.48 is: 641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.68 : 738.72 = 465.48 : x
  2. Step 2: Convert to fraction form
    535.68/738.72 = 465.48/x
  3. Step 3: Cross multiply
    535.68x = 738.72 × 465.48
  4. Step 4: Simplify right side
    535.68x = 343,859.39
  5. Step 5: Solve for x
    x = 343,859.39/535.68
  6. Step 6: Final answer
    x = 641.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.