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Finding the Fourth Proportional to 314.93, 471.70 and 192.82

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Solution

The fourth proportional to 314.93, 471.70 and 192.82 is: 288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.93 : 471.70 = 192.82 : x
  2. Step 2: Convert to fraction form
    314.93/471.70 = 192.82/x
  3. Step 3: Cross multiply
    314.93x = 471.70 × 192.82
  4. Step 4: Simplify right side
    314.93x = 90,952.23
  5. Step 5: Solve for x
    x = 90,952.23/314.93
  6. Step 6: Final answer
    x = 288.81

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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.