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Finding the Fourth Proportional to 607.40, 909.93 and 484.22

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Solution

The fourth proportional to 607.40, 909.93 and 484.22 is: 725.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.40 : 909.93 = 484.22 : x
  2. Step 2: Convert to fraction form
    607.40/909.93 = 484.22/x
  3. Step 3: Cross multiply
    607.40x = 909.93 × 484.22
  4. Step 4: Simplify right side
    607.40x = 440,601.75
  5. Step 5: Solve for x
    x = 440,601.75/607.40
  6. Step 6: Final answer
    x = 725.40

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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.