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Finding the Fourth Proportional to 416.90, 575.35 and 242.27

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Solution

The fourth proportional to 416.90, 575.35 and 242.27 is: 334.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.90 : 575.35 = 242.27 : x
  2. Step 2: Convert to fraction form
    416.90/575.35 = 242.27/x
  3. Step 3: Cross multiply
    416.90x = 575.35 × 242.27
  4. Step 4: Simplify right side
    416.90x = 139,386.56
  5. Step 5: Solve for x
    x = 139,386.56/416.90
  6. Step 6: Final answer
    x = 334.34

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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.