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Finding the Fourth Proportional to 317.88, 479.59 and 303.32

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Solution

The fourth proportional to 317.88, 479.59 and 303.32 is: 457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.88 : 479.59 = 303.32 : x
  2. Step 2: Convert to fraction form
    317.88/479.59 = 303.32/x
  3. Step 3: Cross multiply
    317.88x = 479.59 × 303.32
  4. Step 4: Simplify right side
    317.88x = 145,469.24
  5. Step 5: Solve for x
    x = 145,469.24/317.88
  6. Step 6: Final answer
    x = 457.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.