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Finding the Fourth Proportional to 925.61, 1,382.64 and 693.24

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Solution

The fourth proportional to 925.61, 1,382.64 and 693.24 is: 1,035.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.61 : 1,382.64 = 693.24 : x
  2. Step 2: Convert to fraction form
    925.61/1,382.64 = 693.24/x
  3. Step 3: Cross multiply
    925.61x = 1,382.64 × 693.24
  4. Step 4: Simplify right side
    925.61x = 958,501.35
  5. Step 5: Solve for x
    x = 958,501.35/925.61
  6. Step 6: Final answer
    x = 1,035.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.