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Finding the Fourth Proportional to 925.56, 1,276.92 and 571.32

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Solution

The fourth proportional to 925.56, 1,276.92 and 571.32 is: 788.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.56 : 1,276.92 = 571.32 : x
  2. Step 2: Convert to fraction form
    925.56/1,276.92 = 571.32/x
  3. Step 3: Cross multiply
    925.56x = 1,276.92 × 571.32
  4. Step 4: Simplify right side
    925.56x = 729,529.93
  5. Step 5: Solve for x
    x = 729,529.93/925.56
  6. Step 6: Final answer
    x = 788.20

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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.