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Finding the Fourth Proportional to 950.79, 1,425.91 and 603.60

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Solution

The fourth proportional to 950.79, 1,425.91 and 603.60 is: 905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.79 : 1,425.91 = 603.60 : x
  2. Step 2: Convert to fraction form
    950.79/1,425.91 = 603.60/x
  3. Step 3: Cross multiply
    950.79x = 1,425.91 × 603.60
  4. Step 4: Simplify right side
    950.79x = 860,679.28
  5. Step 5: Solve for x
    x = 860,679.28/950.79
  6. Step 6: Final answer
    x = 905.23

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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.