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Finding the Fourth Proportional to 423.01, 582.56 and 403.57

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Solution

The fourth proportional to 423.01, 582.56 and 403.57 is: 555.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.01 : 582.56 = 403.57 : x
  2. Step 2: Convert to fraction form
    423.01/582.56 = 403.57/x
  3. Step 3: Cross multiply
    423.01x = 582.56 × 403.57
  4. Step 4: Simplify right side
    423.01x = 235,100.83
  5. Step 5: Solve for x
    x = 235,100.83/423.01
  6. Step 6: Final answer
    x = 555.79

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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.