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Finding the Fourth Proportional to 1,658.88, 2,488.72 and 488.93

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Solution

The fourth proportional to 1,658.88, 2,488.72 and 488.93 is: 733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.88 : 2,488.72 = 488.93 : x
  2. Step 2: Convert to fraction form
    1,658.88/2,488.72 = 488.93/x
  3. Step 3: Cross multiply
    1,658.88x = 2,488.72 × 488.93
  4. Step 4: Simplify right side
    1,658.88x = 1,216,794.98
  5. Step 5: Solve for x
    x = 1,216,794.98/1,658.88
  6. Step 6: Final answer
    x = 733.50

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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.