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Finding the Fourth Proportional to 744.10, 1,114.41 and 435.30

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Solution

The fourth proportional to 744.10, 1,114.41 and 435.30 is: 651.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.10 : 1,114.41 = 435.30 : x
  2. Step 2: Convert to fraction form
    744.10/1,114.41 = 435.30/x
  3. Step 3: Cross multiply
    744.10x = 1,114.41 × 435.30
  4. Step 4: Simplify right side
    744.10x = 485,102.67
  5. Step 5: Solve for x
    x = 485,102.67/744.10
  6. Step 6: Final answer
    x = 651.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.