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Finding the Fourth Proportional to 850.13, 1,275.72 and 363.18

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Solution

The fourth proportional to 850.13, 1,275.72 and 363.18 is: 545.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.13 : 1,275.72 = 363.18 : x
  2. Step 2: Convert to fraction form
    850.13/1,275.72 = 363.18/x
  3. Step 3: Cross multiply
    850.13x = 1,275.72 × 363.18
  4. Step 4: Simplify right side
    850.13x = 463,315.99
  5. Step 5: Solve for x
    x = 463,315.99/850.13
  6. Step 6: Final answer
    x = 545.00

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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.