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Finding the Fourth Proportional to 421.01, 580.71 and 322.60

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Solution

The fourth proportional to 421.01, 580.71 and 322.60 is: 444.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    421.01 : 580.71 = 322.60 : x
  2. Step 2: Convert to fraction form
    421.01/580.71 = 322.60/x
  3. Step 3: Cross multiply
    421.01x = 580.71 × 322.60
  4. Step 4: Simplify right side
    421.01x = 187,337.05
  5. Step 5: Solve for x
    x = 187,337.05/421.01
  6. Step 6: Final answer
    x = 444.97

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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.