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Finding the Fourth Proportional to 946.32, 1,305.91 and 526.66

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Solution

The fourth proportional to 946.32, 1,305.91 and 526.66 is: 726.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.32 : 1,305.91 = 526.66 : x
  2. Step 2: Convert to fraction form
    946.32/1,305.91 = 526.66/x
  3. Step 3: Cross multiply
    946.32x = 1,305.91 × 526.66
  4. Step 4: Simplify right side
    946.32x = 687,770.56
  5. Step 5: Solve for x
    x = 687,770.56/946.32
  6. Step 6: Final answer
    x = 726.78

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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.