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Finding the Fourth Proportional to 345.88, 477.32 and 190.63

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Solution

The fourth proportional to 345.88, 477.32 and 190.63 is: 263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.88 : 477.32 = 190.63 : x
  2. Step 2: Convert to fraction form
    345.88/477.32 = 190.63/x
  3. Step 3: Cross multiply
    345.88x = 477.32 × 190.63
  4. Step 4: Simplify right side
    345.88x = 90,991.51
  5. Step 5: Solve for x
    x = 90,991.51/345.88
  6. Step 6: Final answer
    x = 263.07

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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.