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Finding the Fourth Proportional to 946.25, 1,305.91 and 526.69

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Solution

The fourth proportional to 946.25, 1,305.91 and 526.69 is: 726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.25 : 1,305.91 = 526.69 : x
  2. Step 2: Convert to fraction form
    946.25/1,305.91 = 526.69/x
  3. Step 3: Cross multiply
    946.25x = 1,305.91 × 526.69
  4. Step 4: Simplify right side
    946.25x = 687,811.92
  5. Step 5: Solve for x
    x = 687,811.92/946.25
  6. Step 6: Final answer
    x = 726.88

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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.