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Finding the Fourth Proportional to 943.88, 1,302.55 and 529.88

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Solution

The fourth proportional to 943.88, 1,302.55 and 529.88 is: 731.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.88 : 1,302.55 = 529.88 : x
  2. Step 2: Convert to fraction form
    943.88/1,302.55 = 529.88/x
  3. Step 3: Cross multiply
    943.88x = 1,302.55 × 529.88
  4. Step 4: Simplify right side
    943.88x = 690,187.36
  5. Step 5: Solve for x
    x = 690,187.36/943.88
  6. Step 6: Final answer
    x = 731.23

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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.