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Finding the Fourth Proportional to 1,660.91, 2,490.53 and 564.89

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Solution

The fourth proportional to 1,660.91, 2,490.53 and 564.89 is: 847.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.91 : 2,490.53 = 564.89 : x
  2. Step 2: Convert to fraction form
    1,660.91/2,490.53 = 564.89/x
  3. Step 3: Cross multiply
    1,660.91x = 2,490.53 × 564.89
  4. Step 4: Simplify right side
    1,660.91x = 1,406,860.21
  5. Step 5: Solve for x
    x = 1,406,860.21/1,660.91
  6. Step 6: Final answer
    x = 847.04

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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.