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Finding the Fourth Proportional to 409.13, 564.58 and 299.07

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Solution

The fourth proportional to 409.13, 564.58 and 299.07 is: 412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.13 : 564.58 = 299.07 : x
  2. Step 2: Convert to fraction form
    409.13/564.58 = 299.07/x
  3. Step 3: Cross multiply
    409.13x = 564.58 × 299.07
  4. Step 4: Simplify right side
    409.13x = 168,846.12
  5. Step 5: Solve for x
    x = 168,846.12/409.13
  6. Step 6: Final answer
    x = 412.70

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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.