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Finding the Fourth Proportional to 1,266.05, 1,897.54 and 572.54

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Solution

The fourth proportional to 1,266.05, 1,897.54 and 572.54 is: 858.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.05 : 1,897.54 = 572.54 : x
  2. Step 2: Convert to fraction form
    1,266.05/1,897.54 = 572.54/x
  3. Step 3: Cross multiply
    1,266.05x = 1,897.54 × 572.54
  4. Step 4: Simplify right side
    1,266.05x = 1,086,406.63
  5. Step 5: Solve for x
    x = 1,086,406.63/1,266.05
  6. Step 6: Final answer
    x = 858.11

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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.