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Finding the Fourth Proportional to 421.04, 582.27 and 401.69

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Solution

The fourth proportional to 421.04, 582.27 and 401.69 is: 555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    421.04 : 582.27 = 401.69 : x
  2. Step 2: Convert to fraction form
    421.04/582.27 = 401.69/x
  3. Step 3: Cross multiply
    421.04x = 582.27 × 401.69
  4. Step 4: Simplify right side
    421.04x = 233,892.04
  5. Step 5: Solve for x
    x = 233,892.04/421.04
  6. Step 6: Final answer
    x = 555.51

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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.