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Finding the Fourth Proportional to 345.41, 476.65 and 205.59

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Solution

The fourth proportional to 345.41, 476.65 and 205.59 is: 283.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.41 : 476.65 = 205.59 : x
  2. Step 2: Convert to fraction form
    345.41/476.65 = 205.59/x
  3. Step 3: Cross multiply
    345.41x = 476.65 × 205.59
  4. Step 4: Simplify right side
    345.41x = 97,993.84
  5. Step 5: Solve for x
    x = 97,993.84/345.41
  6. Step 6: Final answer
    x = 283.70

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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.