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Finding the Fourth Proportional to 746.27, 1,029.80 and 414.69

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Solution

The fourth proportional to 746.27, 1,029.80 and 414.69 is: 572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.27 : 1,029.80 = 414.69 : x
  2. Step 2: Convert to fraction form
    746.27/1,029.80 = 414.69/x
  3. Step 3: Cross multiply
    746.27x = 1,029.80 × 414.69
  4. Step 4: Simplify right side
    746.27x = 427,047.76
  5. Step 5: Solve for x
    x = 427,047.76/746.27
  6. Step 6: Final answer
    x = 572.24

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Double scale
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1.5x scale

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.