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Finding the Fourth Proportional to 730.03, 1,094.21 and 642.01

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Solution

The fourth proportional to 730.03, 1,094.21 and 642.01 is: 962.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.03 : 1,094.21 = 642.01 : x
  2. Step 2: Convert to fraction form
    730.03/1,094.21 = 642.01/x
  3. Step 3: Cross multiply
    730.03x = 1,094.21 × 642.01
  4. Step 4: Simplify right side
    730.03x = 702,489.66
  5. Step 5: Solve for x
    x = 702,489.66/730.03
  6. Step 6: Final answer
    x = 962.28

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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.