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Finding the Fourth Proportional to 914.66, 1,370.63 and 480.50

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Solution

The fourth proportional to 914.66, 1,370.63 and 480.50 is: 720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.66 : 1,370.63 = 480.50 : x
  2. Step 2: Convert to fraction form
    914.66/1,370.63 = 480.50/x
  3. Step 3: Cross multiply
    914.66x = 1,370.63 × 480.50
  4. Step 4: Simplify right side
    914.66x = 658,578.46
  5. Step 5: Solve for x
    x = 658,578.46/914.66
  6. Step 6: Final answer
    x = 720.03

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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.