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Finding the Fourth Proportional to 417.33, 575.99 and 242.78

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Solution

The fourth proportional to 417.33, 575.99 and 242.78 is: 335.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.33 : 575.99 = 242.78 : x
  2. Step 2: Convert to fraction form
    417.33/575.99 = 242.78/x
  3. Step 3: Cross multiply
    417.33x = 575.99 × 242.78
  4. Step 4: Simplify right side
    417.33x = 139,834.76
  5. Step 5: Solve for x
    x = 139,834.76/417.33
  6. Step 6: Final answer
    x = 335.07

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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.