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Finding the Fourth Proportional to 302.91, 452.22 and 259.59

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Solution

The fourth proportional to 302.91, 452.22 and 259.59 is: 387.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.91 : 452.22 = 259.59 : x
  2. Step 2: Convert to fraction form
    302.91/452.22 = 259.59/x
  3. Step 3: Cross multiply
    302.91x = 452.22 × 259.59
  4. Step 4: Simplify right side
    302.91x = 117,391.79
  5. Step 5: Solve for x
    x = 117,391.79/302.91
  6. Step 6: Final answer
    x = 387.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.