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Finding the Fourth Proportional to 292.30, 439.44 and 256.46

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Solution

The fourth proportional to 292.30, 439.44 and 256.46 is: 385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.30 : 439.44 = 256.46 : x
  2. Step 2: Convert to fraction form
    292.30/439.44 = 256.46/x
  3. Step 3: Cross multiply
    292.30x = 439.44 × 256.46
  4. Step 4: Simplify right side
    292.30x = 112,696.59
  5. Step 5: Solve for x
    x = 112,696.59/292.30
  6. Step 6: Final answer
    x = 385.55

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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.