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Finding the Fourth Proportional to 1,110.31, 1,665.97 and 590.64

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Solution

The fourth proportional to 1,110.31, 1,665.97 and 590.64 is: 886.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.31 : 1,665.97 = 590.64 : x
  2. Step 2: Convert to fraction form
    1,110.31/1,665.97 = 590.64/x
  3. Step 3: Cross multiply
    1,110.31x = 1,665.97 × 590.64
  4. Step 4: Simplify right side
    1,110.31x = 983,990.17
  5. Step 5: Solve for x
    x = 983,990.17/1,110.31
  6. Step 6: Final answer
    x = 886.23

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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.