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Finding the Fourth Proportional to 1,775.64, 2,663.35 and 542.94

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Solution

The fourth proportional to 1,775.64, 2,663.35 and 542.94 is: 814.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.64 : 2,663.35 = 542.94 : x
  2. Step 2: Convert to fraction form
    1,775.64/2,663.35 = 542.94/x
  3. Step 3: Cross multiply
    1,775.64x = 2,663.35 × 542.94
  4. Step 4: Simplify right side
    1,775.64x = 1,446,039.25
  5. Step 5: Solve for x
    x = 1,446,039.25/1,775.64
  6. Step 6: Final answer
    x = 814.38

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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.