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Finding the Fourth Proportional to 346.35, 477.97 and 188.99

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Solution

The fourth proportional to 346.35, 477.97 and 188.99 is: 260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.35 : 477.97 = 188.99 : x
  2. Step 2: Convert to fraction form
    346.35/477.97 = 188.99/x
  3. Step 3: Cross multiply
    346.35x = 477.97 × 188.99
  4. Step 4: Simplify right side
    346.35x = 90,329.16
  5. Step 5: Solve for x
    x = 90,329.16/346.35
  6. Step 6: Final answer
    x = 260.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.