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Finding the Fourth Proportional to 580.28, 800.76 and 347.36

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Solution

The fourth proportional to 580.28, 800.76 and 347.36 is: 479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.28 : 800.76 = 347.36 : x
  2. Step 2: Convert to fraction form
    580.28/800.76 = 347.36/x
  3. Step 3: Cross multiply
    580.28x = 800.76 × 347.36
  4. Step 4: Simplify right side
    580.28x = 278,151.99
  5. Step 5: Solve for x
    x = 278,151.99/580.28
  6. Step 6: Final answer
    x = 479.34

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1.5x scale

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.