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Finding the Fourth Proportional to 345.94, 477.39 and 188.58

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Solution

The fourth proportional to 345.94, 477.39 and 188.58 is: 260.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.94 : 477.39 = 188.58 : x
  2. Step 2: Convert to fraction form
    345.94/477.39 = 188.58/x
  3. Step 3: Cross multiply
    345.94x = 477.39 × 188.58
  4. Step 4: Simplify right side
    345.94x = 90,026.30
  5. Step 5: Solve for x
    x = 90,026.30/345.94
  6. Step 6: Final answer
    x = 260.23

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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.