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Finding the Fourth Proportional to 333.79, 460.61 and 186.40

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Solution

The fourth proportional to 333.79, 460.61 and 186.40 is: 257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.79 : 460.61 = 186.40 : x
  2. Step 2: Convert to fraction form
    333.79/460.61 = 186.40/x
  3. Step 3: Cross multiply
    333.79x = 460.61 × 186.40
  4. Step 4: Simplify right side
    333.79x = 85,854.47
  5. Step 5: Solve for x
    x = 85,854.47/333.79
  6. Step 6: Final answer
    x = 257.21

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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.