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Finding the Fourth Proportional to 341.79, 471.80 and 258.80

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Solution

The fourth proportional to 341.79, 471.80 and 258.80 is: 357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.79 : 471.80 = 258.80 : x
  2. Step 2: Convert to fraction form
    341.79/471.80 = 258.80/x
  3. Step 3: Cross multiply
    341.79x = 471.80 × 258.80
  4. Step 4: Simplify right side
    341.79x = 122,099.40
  5. Step 5: Solve for x
    x = 122,099.40/341.79
  6. Step 6: Final answer
    x = 357.23

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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.