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Finding the Fourth Proportional to 734.29, 1,013.24 and 419.54

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Solution

The fourth proportional to 734.29, 1,013.24 and 419.54 is: 578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.29 : 1,013.24 = 419.54 : x
  2. Step 2: Convert to fraction form
    734.29/1,013.24 = 419.54/x
  3. Step 3: Cross multiply
    734.29x = 1,013.24 × 419.54
  4. Step 4: Simplify right side
    734.29x = 425,090.69
  5. Step 5: Solve for x
    x = 425,090.69/734.29
  6. Step 6: Final answer
    x = 578.92

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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.