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Finding the Fourth Proportional to 743.10, 1,025.22 and 463.18

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Solution

The fourth proportional to 743.10, 1,025.22 and 463.18 is: 639.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.10 : 1,025.22 = 463.18 : x
  2. Step 2: Convert to fraction form
    743.10/1,025.22 = 463.18/x
  3. Step 3: Cross multiply
    743.10x = 1,025.22 × 463.18
  4. Step 4: Simplify right side
    743.10x = 474,861.40
  5. Step 5: Solve for x
    x = 474,861.40/743.10
  6. Step 6: Final answer
    x = 639.03

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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.