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Finding the Fourth Proportional to 330.02, 455.64 and 302.27

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Solution

The fourth proportional to 330.02, 455.64 and 302.27 is: 417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.02 : 455.64 = 302.27 : x
  2. Step 2: Convert to fraction form
    330.02/455.64 = 302.27/x
  3. Step 3: Cross multiply
    330.02x = 455.64 × 302.27
  4. Step 4: Simplify right side
    330.02x = 137,726.30
  5. Step 5: Solve for x
    x = 137,726.30/330.02
  6. Step 6: Final answer
    x = 417.33

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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.