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Finding the Fourth Proportional to 1,035.44, 1,554.01 and 542.39

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Solution

The fourth proportional to 1,035.44, 1,554.01 and 542.39 is: 814.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.44 : 1,554.01 = 542.39 : x
  2. Step 2: Convert to fraction form
    1,035.44/1,554.01 = 542.39/x
  3. Step 3: Cross multiply
    1,035.44x = 1,554.01 × 542.39
  4. Step 4: Simplify right side
    1,035.44x = 842,882.01
  5. Step 5: Solve for x
    x = 842,882.01/1,035.44
  6. Step 6: Final answer
    x = 814.04

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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.