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Finding the Fourth Proportional to 750.62, 1,035.96 and 419.07

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Solution

The fourth proportional to 750.62, 1,035.96 and 419.07 is: 578.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.62 : 1,035.96 = 419.07 : x
  2. Step 2: Convert to fraction form
    750.62/1,035.96 = 419.07/x
  3. Step 3: Cross multiply
    750.62x = 1,035.96 × 419.07
  4. Step 4: Simplify right side
    750.62x = 434,135.10
  5. Step 5: Solve for x
    x = 434,135.10/750.62
  6. Step 6: Final answer
    x = 578.37

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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.