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Finding the Fourth Proportional to 1,754.55, 2,631.07 and 658.15

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Solution

The fourth proportional to 1,754.55, 2,631.07 and 658.15 is: 986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.55 : 2,631.07 = 658.15 : x
  2. Step 2: Convert to fraction form
    1,754.55/2,631.07 = 658.15/x
  3. Step 3: Cross multiply
    1,754.55x = 2,631.07 × 658.15
  4. Step 4: Simplify right side
    1,754.55x = 1,731,638.72
  5. Step 5: Solve for x
    x = 1,731,638.72/1,754.55
  6. Step 6: Final answer
    x = 986.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.