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Finding the Fourth Proportional to 279.04, 416.50 and 238.16

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Solution

The fourth proportional to 279.04, 416.50 and 238.16 is: 355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.04 : 416.50 = 238.16 : x
  2. Step 2: Convert to fraction form
    279.04/416.50 = 238.16/x
  3. Step 3: Cross multiply
    279.04x = 416.50 × 238.16
  4. Step 4: Simplify right side
    279.04x = 99,193.64
  5. Step 5: Solve for x
    x = 99,193.64/279.04
  6. Step 6: Final answer
    x = 355.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.