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Finding the Fourth Proportional to 302.69, 454.73 and 290.39

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Solution

The fourth proportional to 302.69, 454.73 and 290.39 is: 436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.69 : 454.73 = 290.39 : x
  2. Step 2: Convert to fraction form
    302.69/454.73 = 290.39/x
  3. Step 3: Cross multiply
    302.69x = 454.73 × 290.39
  4. Step 4: Simplify right side
    302.69x = 132,045.32
  5. Step 5: Solve for x
    x = 132,045.32/302.69
  6. Step 6: Final answer
    x = 436.24

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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.