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Finding the Fourth Proportional to 672.01, 1,008.23 and 302.13

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Solution

The fourth proportional to 672.01, 1,008.23 and 302.13 is: 453.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.01 : 1,008.23 = 302.13 : x
  2. Step 2: Convert to fraction form
    672.01/1,008.23 = 302.13/x
  3. Step 3: Cross multiply
    672.01x = 1,008.23 × 302.13
  4. Step 4: Simplify right side
    672.01x = 304,616.53
  5. Step 5: Solve for x
    x = 304,616.53/672.01
  6. Step 6: Final answer
    x = 453.29

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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.