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Finding the Fourth Proportional to 346.51, 519.55 and 115.34

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Solution

The fourth proportional to 346.51, 519.55 and 115.34 is: 172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.51 : 519.55 = 115.34 : x
  2. Step 2: Convert to fraction form
    346.51/519.55 = 115.34/x
  3. Step 3: Cross multiply
    346.51x = 519.55 × 115.34
  4. Step 4: Simplify right side
    346.51x = 59,923.02
  5. Step 5: Solve for x
    x = 59,923.02/346.51
  6. Step 6: Final answer
    x = 172.93

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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.