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Finding the Fourth Proportional to 580.72, 801.19 and 440.69

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Solution

The fourth proportional to 580.72, 801.19 and 440.69 is: 608.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.72 : 801.19 = 440.69 : x
  2. Step 2: Convert to fraction form
    580.72/801.19 = 440.69/x
  3. Step 3: Cross multiply
    580.72x = 801.19 × 440.69
  4. Step 4: Simplify right side
    580.72x = 353,076.42
  5. Step 5: Solve for x
    x = 353,076.42/580.72
  6. Step 6: Final answer
    x = 608.00

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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.