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Finding the Fourth Proportional to 1,165.01, 1,747.73 and 385.06

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Solution

The fourth proportional to 1,165.01, 1,747.73 and 385.06 is: 577.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.01 : 1,747.73 = 385.06 : x
  2. Step 2: Convert to fraction form
    1,165.01/1,747.73 = 385.06/x
  3. Step 3: Cross multiply
    1,165.01x = 1,747.73 × 385.06
  4. Step 4: Simplify right side
    1,165.01x = 672,980.91
  5. Step 5: Solve for x
    x = 672,980.91/1,165.01
  6. Step 6: Final answer
    x = 577.66

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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.