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Finding the Fourth Proportional to 935.14, 1,290.48 and 542.23

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Solution

The fourth proportional to 935.14, 1,290.48 and 542.23 is: 748.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.14 : 1,290.48 = 542.23 : x
  2. Step 2: Convert to fraction form
    935.14/1,290.48 = 542.23/x
  3. Step 3: Cross multiply
    935.14x = 1,290.48 × 542.23
  4. Step 4: Simplify right side
    935.14x = 699,736.97
  5. Step 5: Solve for x
    x = 699,736.97/935.14
  6. Step 6: Final answer
    x = 748.27

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1.5x scale

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.