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Finding the Fourth Proportional to 1,235.24, 1,853.68 and 658.52

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Solution

The fourth proportional to 1,235.24, 1,853.68 and 658.52 is: 988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.24 : 1,853.68 = 658.52 : x
  2. Step 2: Convert to fraction form
    1,235.24/1,853.68 = 658.52/x
  3. Step 3: Cross multiply
    1,235.24x = 1,853.68 × 658.52
  4. Step 4: Simplify right side
    1,235.24x = 1,220,685.35
  5. Step 5: Solve for x
    x = 1,220,685.35/1,235.24
  6. Step 6: Final answer
    x = 988.22

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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.