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Finding the Fourth Proportional to 411.11, 566.79 and 340.91

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Solution

The fourth proportional to 411.11, 566.79 and 340.91 is: 470.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.11 : 566.79 = 340.91 : x
  2. Step 2: Convert to fraction form
    411.11/566.79 = 340.91/x
  3. Step 3: Cross multiply
    411.11x = 566.79 × 340.91
  4. Step 4: Simplify right side
    411.11x = 193,224.38
  5. Step 5: Solve for x
    x = 193,224.38/411.11
  6. Step 6: Final answer
    x = 470.01

Related Problems

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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.