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Finding the Fourth Proportional to 750.21, 1,035.39 and 435.48

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Solution

The fourth proportional to 750.21, 1,035.39 and 435.48 is: 601.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.21 : 1,035.39 = 435.48 : x
  2. Step 2: Convert to fraction form
    750.21/1,035.39 = 435.48/x
  3. Step 3: Cross multiply
    750.21x = 1,035.39 × 435.48
  4. Step 4: Simplify right side
    750.21x = 450,891.64
  5. Step 5: Solve for x
    x = 450,891.64/750.21
  6. Step 6: Final answer
    x = 601.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.