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Finding the Fourth Proportional to 746.19, 1,029.69 and 414.63

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Solution

The fourth proportional to 746.19, 1,029.69 and 414.63 is: 572.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.19 : 1,029.69 = 414.63 : x
  2. Step 2: Convert to fraction form
    746.19/1,029.69 = 414.63/x
  3. Step 3: Cross multiply
    746.19x = 1,029.69 × 414.63
  4. Step 4: Simplify right side
    746.19x = 426,940.36
  5. Step 5: Solve for x
    x = 426,940.36/746.19
  6. Step 6: Final answer
    x = 572.16

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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.