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Finding the Fourth Proportional to 955.72, 1,433.24 and 435.29

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Solution

The fourth proportional to 955.72, 1,433.24 and 435.29 is: 652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.72 : 1,433.24 = 435.29 : x
  2. Step 2: Convert to fraction form
    955.72/1,433.24 = 435.29/x
  3. Step 3: Cross multiply
    955.72x = 1,433.24 × 435.29
  4. Step 4: Simplify right side
    955.72x = 623,875.04
  5. Step 5: Solve for x
    x = 623,875.04/955.72
  6. Step 6: Final answer
    x = 652.78

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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.