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Finding the Fourth Proportional to 1,009.59, 1,514.99 and 522.64

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Solution

The fourth proportional to 1,009.59, 1,514.99 and 522.64 is: 784.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.59 : 1,514.99 = 522.64 : x
  2. Step 2: Convert to fraction form
    1,009.59/1,514.99 = 522.64/x
  3. Step 3: Cross multiply
    1,009.59x = 1,514.99 × 522.64
  4. Step 4: Simplify right side
    1,009.59x = 791,794.37
  5. Step 5: Solve for x
    x = 791,794.37/1,009.59
  6. Step 6: Final answer
    x = 784.27

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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.