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Finding the Fourth Proportional to 639.94, 958.26 and 603.52

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Solution

The fourth proportional to 639.94, 958.26 and 603.52 is: 903.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.94 : 958.26 = 603.52 : x
  2. Step 2: Convert to fraction form
    639.94/958.26 = 603.52/x
  3. Step 3: Cross multiply
    639.94x = 958.26 × 603.52
  4. Step 4: Simplify right side
    639.94x = 578,329.08
  5. Step 5: Solve for x
    x = 578,329.08/639.94
  6. Step 6: Final answer
    x = 903.72

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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.