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Finding the Fourth Proportional to 302.36, 451.59 and 253.28

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Solution

The fourth proportional to 302.36, 451.59 and 253.28 is: 378.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.36 : 451.59 = 253.28 : x
  2. Step 2: Convert to fraction form
    302.36/451.59 = 253.28/x
  3. Step 3: Cross multiply
    302.36x = 451.59 × 253.28
  4. Step 4: Simplify right side
    302.36x = 114,376.46
  5. Step 5: Solve for x
    x = 114,376.46/302.36
  6. Step 6: Final answer
    x = 378.29

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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.