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Finding the Fourth Proportional to 607.67, 835.80 and 555.43

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Solution

The fourth proportional to 607.67, 835.80 and 555.43 is: 763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.67 : 835.80 = 555.43 : x
  2. Step 2: Convert to fraction form
    607.67/835.80 = 555.43/x
  3. Step 3: Cross multiply
    607.67x = 835.80 × 555.43
  4. Step 4: Simplify right side
    607.67x = 464,228.39
  5. Step 5: Solve for x
    x = 464,228.39/607.67
  6. Step 6: Final answer
    x = 763.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.