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Finding the Fourth Proportional to 1,668.65, 2,502.88 and 498.66

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Solution

The fourth proportional to 1,668.65, 2,502.88 and 498.66 is: 747.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.65 : 2,502.88 = 498.66 : x
  2. Step 2: Convert to fraction form
    1,668.65/2,502.88 = 498.66/x
  3. Step 3: Cross multiply
    1,668.65x = 2,502.88 × 498.66
  4. Step 4: Simplify right side
    1,668.65x = 1,248,078.32
  5. Step 5: Solve for x
    x = 1,248,078.32/1,668.65
  6. Step 6: Final answer
    x = 747.96

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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.