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Finding the Fourth Proportional to 946.09, 1,305.50 and 547.69

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Solution

The fourth proportional to 946.09, 1,305.50 and 547.69 is: 755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.09 : 1,305.50 = 547.69 : x
  2. Step 2: Convert to fraction form
    946.09/1,305.50 = 547.69/x
  3. Step 3: Cross multiply
    946.09x = 1,305.50 × 547.69
  4. Step 4: Simplify right side
    946.09x = 715,008.82
  5. Step 5: Solve for x
    x = 715,008.82/946.09
  6. Step 6: Final answer
    x = 755.75

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Double scale
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1.5x scale

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.