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Finding the Fourth Proportional to 929.35, 1,282.12 and 575.02

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Solution

The fourth proportional to 929.35, 1,282.12 and 575.02 is: 793.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.35 : 1,282.12 = 575.02 : x
  2. Step 2: Convert to fraction form
    929.35/1,282.12 = 575.02/x
  3. Step 3: Cross multiply
    929.35x = 1,282.12 × 575.02
  4. Step 4: Simplify right side
    929.35x = 737,244.64
  5. Step 5: Solve for x
    x = 737,244.64/929.35
  6. Step 6: Final answer
    x = 793.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.