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Finding the Fourth Proportional to 607.00, 909.14 and 425.21

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Solution

The fourth proportional to 607.00, 909.14 and 425.21 is: 636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.00 : 909.14 = 425.21 : x
  2. Step 2: Convert to fraction form
    607.00/909.14 = 425.21/x
  3. Step 3: Cross multiply
    607.00x = 909.14 × 425.21
  4. Step 4: Simplify right side
    607.00x = 386,573.18
  5. Step 5: Solve for x
    x = 386,573.18/607.00
  6. Step 6: Final answer
    x = 636.85

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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.