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Finding the Fourth Proportional to 358.93, 495.56 and 275.89

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Solution

The fourth proportional to 358.93, 495.56 and 275.89 is: 380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.93 : 495.56 = 275.89 : x
  2. Step 2: Convert to fraction form
    358.93/495.56 = 275.89/x
  3. Step 3: Cross multiply
    358.93x = 495.56 × 275.89
  4. Step 4: Simplify right side
    358.93x = 136,717.57
  5. Step 5: Solve for x
    x = 136,717.57/358.93
  6. Step 6: Final answer
    x = 380.90

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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.