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Finding the Fourth Proportional to 1,658.78, 2,488.53 and 504.50

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Solution

The fourth proportional to 1,658.78, 2,488.53 and 504.50 is: 756.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.78 : 2,488.53 = 504.50 : x
  2. Step 2: Convert to fraction form
    1,658.78/2,488.53 = 504.50/x
  3. Step 3: Cross multiply
    1,658.78x = 2,488.53 × 504.50
  4. Step 4: Simplify right side
    1,658.78x = 1,255,463.39
  5. Step 5: Solve for x
    x = 1,255,463.39/1,658.78
  6. Step 6: Final answer
    x = 756.86

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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.