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Finding the Fourth Proportional to 835.08, 1,152.36 and 572.64

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Solution

The fourth proportional to 835.08, 1,152.36 and 572.64 is: 790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.08 : 1,152.36 = 572.64 : x
  2. Step 2: Convert to fraction form
    835.08/1,152.36 = 572.64/x
  3. Step 3: Cross multiply
    835.08x = 1,152.36 × 572.64
  4. Step 4: Simplify right side
    835.08x = 659,887.43
  5. Step 5: Solve for x
    x = 659,887.43/835.08
  6. Step 6: Final answer
    x = 790.21

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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.