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Finding the Fourth Proportional to 754.94, 1,132.51 and 322.20

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Solution

The fourth proportional to 754.94, 1,132.51 and 322.20 is: 483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.94 : 1,132.51 = 322.20 : x
  2. Step 2: Convert to fraction form
    754.94/1,132.51 = 322.20/x
  3. Step 3: Cross multiply
    754.94x = 1,132.51 × 322.20
  4. Step 4: Simplify right side
    754.94x = 364,888.25
  5. Step 5: Solve for x
    x = 364,888.25/754.94
  6. Step 6: Final answer
    x = 483.34

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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.