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Finding the Fourth Proportional to 1,061.51, 1,592.24 and 321.10

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Solution

The fourth proportional to 1,061.51, 1,592.24 and 321.10 is: 481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.51 : 1,592.24 = 321.10 : x
  2. Step 2: Convert to fraction form
    1,061.51/1,592.24 = 321.10/x
  3. Step 3: Cross multiply
    1,061.51x = 1,592.24 × 321.10
  4. Step 4: Simplify right side
    1,061.51x = 511,268.26
  5. Step 5: Solve for x
    x = 511,268.26/1,061.51
  6. Step 6: Final answer
    x = 481.64

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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.