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Finding the Fourth Proportional to 925.45, 1,276.46 and 552.14

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Solution

The fourth proportional to 925.45, 1,276.46 and 552.14 is: 761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.45 : 1,276.46 = 552.14 : x
  2. Step 2: Convert to fraction form
    925.45/1,276.46 = 552.14/x
  3. Step 3: Cross multiply
    925.45x = 1,276.46 × 552.14
  4. Step 4: Simplify right side
    925.45x = 704,785.93
  5. Step 5: Solve for x
    x = 704,785.93/925.45
  6. Step 6: Final answer
    x = 761.56

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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.