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Finding the Fourth Proportional to 951.84, 1,313.06 and 620.46

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Solution

The fourth proportional to 951.84, 1,313.06 and 620.46 is: 855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.84 : 1,313.06 = 620.46 : x
  2. Step 2: Convert to fraction form
    951.84/1,313.06 = 620.46/x
  3. Step 3: Cross multiply
    951.84x = 1,313.06 × 620.46
  4. Step 4: Simplify right side
    951.84x = 814,701.21
  5. Step 5: Solve for x
    x = 814,701.21/951.84
  6. Step 6: Final answer
    x = 855.92

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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.