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Finding the Fourth Proportional to 746.29, 1,029.88 and 414.74

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Solution

The fourth proportional to 746.29, 1,029.88 and 414.74 is: 572.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.29 : 1,029.88 = 414.74 : x
  2. Step 2: Convert to fraction form
    746.29/1,029.88 = 414.74/x
  3. Step 3: Cross multiply
    746.29x = 1,029.88 × 414.74
  4. Step 4: Simplify right side
    746.29x = 427,135.52
  5. Step 5: Solve for x
    x = 427,135.52/746.29
  6. Step 6: Final answer
    x = 572.35

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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.