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Finding the Fourth Proportional to 806.67, 1,210.28 and 373.50

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Solution

The fourth proportional to 806.67, 1,210.28 and 373.50 is: 560.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.67 : 1,210.28 = 373.50 : x
  2. Step 2: Convert to fraction form
    806.67/1,210.28 = 373.50/x
  3. Step 3: Cross multiply
    806.67x = 1,210.28 × 373.50
  4. Step 4: Simplify right side
    806.67x = 452,039.58
  5. Step 5: Solve for x
    x = 452,039.58/806.67
  6. Step 6: Final answer
    x = 560.38

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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.