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Finding the Fourth Proportional to 955.55, 1,433.81 and 435.50

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Solution

The fourth proportional to 955.55, 1,433.81 and 435.50 is: 653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.55 : 1,433.81 = 435.50 : x
  2. Step 2: Convert to fraction form
    955.55/1,433.81 = 435.50/x
  3. Step 3: Cross multiply
    955.55x = 1,433.81 × 435.50
  4. Step 4: Simplify right side
    955.55x = 624,418.17
  5. Step 5: Solve for x
    x = 624,418.17/955.55
  6. Step 6: Final answer
    x = 653.46

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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.