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Finding the Fourth Proportional to 1,775.65, 2,663.88 and 543.05

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Solution

The fourth proportional to 1,775.65, 2,663.88 and 543.05 is: 814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.65 : 2,663.88 = 543.05 : x
  2. Step 2: Convert to fraction form
    1,775.65/2,663.88 = 543.05/x
  3. Step 3: Cross multiply
    1,775.65x = 2,663.88 × 543.05
  4. Step 4: Simplify right side
    1,775.65x = 1,446,606.71
  5. Step 5: Solve for x
    x = 1,446,606.71/1,775.65
  6. Step 6: Final answer
    x = 814.69

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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.