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Finding the Fourth Proportional to 317.95, 439.50 and 292.44

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Solution

The fourth proportional to 317.95, 439.50 and 292.44 is: 404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.95 : 439.50 = 292.44 : x
  2. Step 2: Convert to fraction form
    317.95/439.50 = 292.44/x
  3. Step 3: Cross multiply
    317.95x = 439.50 × 292.44
  4. Step 4: Simplify right side
    317.95x = 128,527.38
  5. Step 5: Solve for x
    x = 128,527.38/317.95
  6. Step 6: Final answer
    x = 404.24

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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.