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Finding the Fourth Proportional to 672.12, 925.38 and 573.48

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Solution

The fourth proportional to 672.12, 925.38 and 573.48 is: 789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.12 : 925.38 = 573.48 : x
  2. Step 2: Convert to fraction form
    672.12/925.38 = 573.48/x
  3. Step 3: Cross multiply
    672.12x = 925.38 × 573.48
  4. Step 4: Simplify right side
    672.12x = 530,686.92
  5. Step 5: Solve for x
    x = 530,686.92/672.12
  6. Step 6: Final answer
    x = 789.57

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1.5x scale

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.