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Finding the Fourth Proportional to 939.06, 1,295.98 and 546.08

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Solution

The fourth proportional to 939.06, 1,295.98 and 546.08 is: 753.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    939.06 : 1,295.98 = 546.08 : x
  2. Step 2: Convert to fraction form
    939.06/1,295.98 = 546.08/x
  3. Step 3: Cross multiply
    939.06x = 1,295.98 × 546.08
  4. Step 4: Simplify right side
    939.06x = 707,700.91
  5. Step 5: Solve for x
    x = 707,700.91/939.06
  6. Step 6: Final answer
    x = 753.63

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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.