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Finding the Fourth Proportional to 302.33, 455.36 and 280.94

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Solution

The fourth proportional to 302.33, 455.36 and 280.94 is: 423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.33 : 455.36 = 280.94 : x
  2. Step 2: Convert to fraction form
    302.33/455.36 = 280.94/x
  3. Step 3: Cross multiply
    302.33x = 455.36 × 280.94
  4. Step 4: Simplify right side
    302.33x = 127,927.08
  5. Step 5: Solve for x
    x = 127,927.08/302.33
  6. Step 6: Final answer
    x = 423.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.