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Finding the Fourth Proportional to 925.56, 1,386.81 and 462.87

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Solution

The fourth proportional to 925.56, 1,386.81 and 462.87 is: 693.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.56 : 1,386.81 = 462.87 : x
  2. Step 2: Convert to fraction form
    925.56/1,386.81 = 462.87/x
  3. Step 3: Cross multiply
    925.56x = 1,386.81 × 462.87
  4. Step 4: Simplify right side
    925.56x = 641,912.74
  5. Step 5: Solve for x
    x = 641,912.74/925.56
  6. Step 6: Final answer
    x = 693.54

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Double scale
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1.5x scale

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.