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Finding the Fourth Proportional to 539.66, 809.23 and 247.07

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Solution

The fourth proportional to 539.66, 809.23 and 247.07 is: 370.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.66 : 809.23 = 247.07 : x
  2. Step 2: Convert to fraction form
    539.66/809.23 = 247.07/x
  3. Step 3: Cross multiply
    539.66x = 809.23 × 247.07
  4. Step 4: Simplify right side
    539.66x = 199,936.46
  5. Step 5: Solve for x
    x = 199,936.46/539.66
  6. Step 6: Final answer
    x = 370.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 540.66, 810.73 and 248.07
Similar ratio
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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.