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Finding the Fourth Proportional to 1,143.40, 1,715.11 and 363.95

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Solution

The fourth proportional to 1,143.40, 1,715.11 and 363.95 is: 545.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.40 : 1,715.11 = 363.95 : x
  2. Step 2: Convert to fraction form
    1,143.40/1,715.11 = 363.95/x
  3. Step 3: Cross multiply
    1,143.40x = 1,715.11 × 363.95
  4. Step 4: Simplify right side
    1,143.40x = 624,214.28
  5. Step 5: Solve for x
    x = 624,214.28/1,143.40
  6. Step 6: Final answer
    x = 545.93

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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.