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Finding the Fourth Proportional to 1,009.57, 1,514.63 and 577.03

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Solution

The fourth proportional to 1,009.57, 1,514.63 and 577.03 is: 865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.57 : 1,514.63 = 577.03 : x
  2. Step 2: Convert to fraction form
    1,009.57/1,514.63 = 577.03/x
  3. Step 3: Cross multiply
    1,009.57x = 1,514.63 × 577.03
  4. Step 4: Simplify right side
    1,009.57x = 873,986.95
  5. Step 5: Solve for x
    x = 873,986.95/1,009.57
  6. Step 6: Final answer
    x = 865.70

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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.