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Finding the Fourth Proportional to 1,001.98, 1,502.62 and 385.36

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Solution

The fourth proportional to 1,001.98, 1,502.62 and 385.36 is: 577.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.98 : 1,502.62 = 385.36 : x
  2. Step 2: Convert to fraction form
    1,001.98/1,502.62 = 385.36/x
  3. Step 3: Cross multiply
    1,001.98x = 1,502.62 × 385.36
  4. Step 4: Simplify right side
    1,001.98x = 579,049.64
  5. Step 5: Solve for x
    x = 579,049.64/1,001.98
  6. Step 6: Final answer
    x = 577.91

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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.