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Finding the Fourth Proportional to 477.88, 659.46 and 320.32

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Solution

The fourth proportional to 477.88, 659.46 and 320.32 is: 442.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.88 : 659.46 = 320.32 : x
  2. Step 2: Convert to fraction form
    477.88/659.46 = 320.32/x
  3. Step 3: Cross multiply
    477.88x = 659.46 × 320.32
  4. Step 4: Simplify right side
    477.88x = 211,238.23
  5. Step 5: Solve for x
    x = 211,238.23/477.88
  6. Step 6: Final answer
    x = 442.03

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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.