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Finding the Fourth Proportional to 417.17, 571.94 and 409.76

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Solution

The fourth proportional to 417.17, 571.94 and 409.76 is: 561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.17 : 571.94 = 409.76 : x
  2. Step 2: Convert to fraction form
    417.17/571.94 = 409.76/x
  3. Step 3: Cross multiply
    417.17x = 571.94 × 409.76
  4. Step 4: Simplify right side
    417.17x = 234,359.21
  5. Step 5: Solve for x
    x = 234,359.21/417.17
  6. Step 6: Final answer
    x = 561.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.