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Finding the Fourth Proportional to 340.50, 467.85 and 278.16

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Solution

The fourth proportional to 340.50, 467.85 and 278.16 is: 382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.50 : 467.85 = 278.16 : x
  2. Step 2: Convert to fraction form
    340.50/467.85 = 278.16/x
  3. Step 3: Cross multiply
    340.50x = 467.85 × 278.16
  4. Step 4: Simplify right side
    340.50x = 130,137.16
  5. Step 5: Solve for x
    x = 130,137.16/340.50
  6. Step 6: Final answer
    x = 382.19

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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.