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Finding the Fourth Proportional to 349.51, 524.07 and 115.14

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Solution

The fourth proportional to 349.51, 524.07 and 115.14 is: 172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.51 : 524.07 = 115.14 : x
  2. Step 2: Convert to fraction form
    349.51/524.07 = 115.14/x
  3. Step 3: Cross multiply
    349.51x = 524.07 × 115.14
  4. Step 4: Simplify right side
    349.51x = 60,338.22
  5. Step 5: Solve for x
    x = 60,338.22/349.51
  6. Step 6: Final answer
    x = 172.64

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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.