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Finding the Fourth Proportional to 746.59, 1,030.27 and 415.03

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Solution

The fourth proportional to 746.59, 1,030.27 and 415.03 is: 572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.59 : 1,030.27 = 415.03 : x
  2. Step 2: Convert to fraction form
    746.59/1,030.27 = 415.03/x
  3. Step 3: Cross multiply
    746.59x = 1,030.27 × 415.03
  4. Step 4: Simplify right side
    746.59x = 427,592.96
  5. Step 5: Solve for x
    x = 427,592.96/746.59
  6. Step 6: Final answer
    x = 572.73

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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.