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Finding the Fourth Proportional to 417.26, 575.74 and 242.56

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Solution

The fourth proportional to 417.26, 575.74 and 242.56 is: 334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.26 : 575.74 = 242.56 : x
  2. Step 2: Convert to fraction form
    417.26/575.74 = 242.56/x
  3. Step 3: Cross multiply
    417.26x = 575.74 × 242.56
  4. Step 4: Simplify right side
    417.26x = 139,651.49
  5. Step 5: Solve for x
    x = 139,651.49/417.26
  6. Step 6: Final answer
    x = 334.69

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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.