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Finding the Fourth Proportional to 292.59, 403.78 and 159.81

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Solution

The fourth proportional to 292.59, 403.78 and 159.81 is: 220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.59 : 403.78 = 159.81 : x
  2. Step 2: Convert to fraction form
    292.59/403.78 = 159.81/x
  3. Step 3: Cross multiply
    292.59x = 403.78 × 159.81
  4. Step 4: Simplify right side
    292.59x = 64,530.20
  5. Step 5: Solve for x
    x = 64,530.20/292.59
  6. Step 6: Final answer
    x = 220.55

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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.