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Finding the Fourth Proportional to 607.60, 912.78 and 525.64

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Solution

The fourth proportional to 607.60, 912.78 and 525.64 is: 789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.60 : 912.78 = 525.64 : x
  2. Step 2: Convert to fraction form
    607.60/912.78 = 525.64/x
  3. Step 3: Cross multiply
    607.60x = 912.78 × 525.64
  4. Step 4: Simplify right side
    607.60x = 479,793.68
  5. Step 5: Solve for x
    x = 479,793.68/607.60
  6. Step 6: Final answer
    x = 789.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.