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Finding the Fourth Proportional to 341.65, 512.38 and 98.11

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Solution

The fourth proportional to 341.65, 512.38 and 98.11 is: 147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.65 : 512.38 = 98.11 : x
  2. Step 2: Convert to fraction form
    341.65/512.38 = 98.11/x
  3. Step 3: Cross multiply
    341.65x = 512.38 × 98.11
  4. Step 4: Simplify right side
    341.65x = 50,269.60
  5. Step 5: Solve for x
    x = 50,269.60/341.65
  6. Step 6: Final answer
    x = 147.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.