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Finding the Fourth Proportional to 659.25, 910.08 and 423.32

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Solution

The fourth proportional to 659.25, 910.08 and 423.32 is: 584.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.25 : 910.08 = 423.32 : x
  2. Step 2: Convert to fraction form
    659.25/910.08 = 423.32/x
  3. Step 3: Cross multiply
    659.25x = 910.08 × 423.32
  4. Step 4: Simplify right side
    659.25x = 385,250.52
  5. Step 5: Solve for x
    x = 385,250.52/659.25
  6. Step 6: Final answer
    x = 584.38

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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.