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Finding the Fourth Proportional to 951.93, 1,314.05 and 620.23

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Solution

The fourth proportional to 951.93, 1,314.05 and 620.23 is: 856.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.93 : 1,314.05 = 620.23 : x
  2. Step 2: Convert to fraction form
    951.93/1,314.05 = 620.23/x
  3. Step 3: Cross multiply
    951.93x = 1,314.05 × 620.23
  4. Step 4: Simplify right side
    951.93x = 815,013.23
  5. Step 5: Solve for x
    x = 815,013.23/951.93
  6. Step 6: Final answer
    x = 856.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.