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Finding the Fourth Proportional to 806.95, 1,210.26 and 344.76

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Solution

The fourth proportional to 806.95, 1,210.26 and 344.76 is: 517.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.95 : 1,210.26 = 344.76 : x
  2. Step 2: Convert to fraction form
    806.95/1,210.26 = 344.76/x
  3. Step 3: Cross multiply
    806.95x = 1,210.26 × 344.76
  4. Step 4: Simplify right side
    806.95x = 417,249.24
  5. Step 5: Solve for x
    x = 417,249.24/806.95
  6. Step 6: Final answer
    x = 517.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.