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Finding the Fourth Proportional to 693.48, 951.72 and 627.84

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Solution

The fourth proportional to 693.48, 951.72 and 627.84 is: 861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.48 : 951.72 = 627.84 : x
  2. Step 2: Convert to fraction form
    693.48/951.72 = 627.84/x
  3. Step 3: Cross multiply
    693.48x = 951.72 × 627.84
  4. Step 4: Simplify right side
    693.48x = 597,527.88
  5. Step 5: Solve for x
    x = 597,527.88/693.48
  6. Step 6: Final answer
    x = 861.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.