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Finding the Fourth Proportional to 423.82, 584.28 and 358.20

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Solution

The fourth proportional to 423.82, 584.28 and 358.20 is: 493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.82 : 584.28 = 358.20 : x
  2. Step 2: Convert to fraction form
    423.82/584.28 = 358.20/x
  3. Step 3: Cross multiply
    423.82x = 584.28 × 358.20
  4. Step 4: Simplify right side
    423.82x = 209,289.10
  5. Step 5: Solve for x
    x = 209,289.10/423.82
  6. Step 6: Final answer
    x = 493.82

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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.