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Finding the Fourth Proportional to 607.75, 909.30 and 606.20

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Solution

The fourth proportional to 607.75, 909.30 and 606.20 is: 906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.75 : 909.30 = 606.20 : x
  2. Step 2: Convert to fraction form
    607.75/909.30 = 606.20/x
  3. Step 3: Cross multiply
    607.75x = 909.30 × 606.20
  4. Step 4: Simplify right side
    607.75x = 551,217.66
  5. Step 5: Solve for x
    x = 551,217.66/607.75
  6. Step 6: Final answer
    x = 906.98

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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.