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Finding the Fourth Proportional to 410.36, 564.99 and 389.84

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Solution

The fourth proportional to 410.36, 564.99 and 389.84 is: 536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.36 : 564.99 = 389.84 : x
  2. Step 2: Convert to fraction form
    410.36/564.99 = 389.84/x
  3. Step 3: Cross multiply
    410.36x = 564.99 × 389.84
  4. Step 4: Simplify right side
    410.36x = 220,255.70
  5. Step 5: Solve for x
    x = 220,255.70/410.36
  6. Step 6: Final answer
    x = 536.74

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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.