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Finding the Fourth Proportional to 914.61, 1,371.61 and 366.85

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Solution

The fourth proportional to 914.61, 1,371.61 and 366.85 is: 550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.61 : 1,371.61 = 366.85 : x
  2. Step 2: Convert to fraction form
    914.61/1,371.61 = 366.85/x
  3. Step 3: Cross multiply
    914.61x = 1,371.61 × 366.85
  4. Step 4: Simplify right side
    914.61x = 503,175.13
  5. Step 5: Solve for x
    x = 503,175.13/914.61
  6. Step 6: Final answer
    x = 550.15

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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.