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Finding the Fourth Proportional to 535.77, 738.99 and 325.80

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Solution

The fourth proportional to 535.77, 738.99 and 325.80 is: 449.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.77 : 738.99 = 325.80 : x
  2. Step 2: Convert to fraction form
    535.77/738.99 = 325.80/x
  3. Step 3: Cross multiply
    535.77x = 738.99 × 325.80
  4. Step 4: Simplify right side
    535.77x = 240,762.94
  5. Step 5: Solve for x
    x = 240,762.94/535.77
  6. Step 6: Final answer
    x = 449.38

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Double scale
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1.5x scale

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.