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Finding the Fourth Proportional to 423.15, 583.99 and 236.66

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Solution

The fourth proportional to 423.15, 583.99 and 236.66 is: 326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.15 : 583.99 = 236.66 : x
  2. Step 2: Convert to fraction form
    423.15/583.99 = 236.66/x
  3. Step 3: Cross multiply
    423.15x = 583.99 × 236.66
  4. Step 4: Simplify right side
    423.15x = 138,207.07
  5. Step 5: Solve for x
    x = 138,207.07/423.15
  6. Step 6: Final answer
    x = 326.62

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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.