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Finding the Fourth Proportional to 345.41, 476.49 and 247.22

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Solution

The fourth proportional to 345.41, 476.49 and 247.22 is: 341.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.41 : 476.49 = 247.22 : x
  2. Step 2: Convert to fraction form
    345.41/476.49 = 247.22/x
  3. Step 3: Cross multiply
    345.41x = 476.49 × 247.22
  4. Step 4: Simplify right side
    345.41x = 117,798.83
  5. Step 5: Solve for x
    x = 117,798.83/345.41
  6. Step 6: Final answer
    x = 341.04

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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.