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Finding the Fourth Proportional to 948.37, 1,313.82 and 925.69

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Solution

The fourth proportional to 948.37, 1,313.82 and 925.69 is: 1,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.37 : 1,313.82 = 925.69 : x
  2. Step 2: Convert to fraction form
    948.37/1,313.82 = 925.69/x
  3. Step 3: Cross multiply
    948.37x = 1,313.82 × 925.69
  4. Step 4: Simplify right side
    948.37x = 1,216,190.04
  5. Step 5: Solve for x
    x = 1,216,190.04/948.37
  6. Step 6: Final answer
    x = 1,282.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.