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Finding the Fourth Proportional to 1,009.16, 1,514.42 and 522.55

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Solution

The fourth proportional to 1,009.16, 1,514.42 and 522.55 is: 784.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.16 : 1,514.42 = 522.55 : x
  2. Step 2: Convert to fraction form
    1,009.16/1,514.42 = 522.55/x
  3. Step 3: Cross multiply
    1,009.16x = 1,514.42 × 522.55
  4. Step 4: Simplify right side
    1,009.16x = 791,355.08
  5. Step 5: Solve for x
    x = 791,355.08/1,009.16
  6. Step 6: Final answer
    x = 784.18

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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.