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Finding the Fourth Proportional to 358.41, 539.45 and 305.55

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Solution

The fourth proportional to 358.41, 539.45 and 305.55 is: 459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.41 : 539.45 = 305.55 : x
  2. Step 2: Convert to fraction form
    358.41/539.45 = 305.55/x
  3. Step 3: Cross multiply
    358.41x = 539.45 × 305.55
  4. Step 4: Simplify right side
    358.41x = 164,827.42
  5. Step 5: Solve for x
    x = 164,827.42/358.41
  6. Step 6: Final answer
    x = 459.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.