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Finding the Fourth Proportional to 607.21, 909.60 and 516.10

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Solution

The fourth proportional to 607.21, 909.60 and 516.10 is: 773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.21 : 909.60 = 516.10 : x
  2. Step 2: Convert to fraction form
    607.21/909.60 = 516.10/x
  3. Step 3: Cross multiply
    607.21x = 909.60 × 516.10
  4. Step 4: Simplify right side
    607.21x = 469,444.56
  5. Step 5: Solve for x
    x = 469,444.56/607.21
  6. Step 6: Final answer
    x = 773.12

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Why These Related Problems?

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