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Finding the Fourth Proportional to 832.70, 1,149.10 and 459.66

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Solution

The fourth proportional to 832.70, 1,149.10 and 459.66 is: 634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.70 : 1,149.10 = 459.66 : x
  2. Step 2: Convert to fraction form
    832.70/1,149.10 = 459.66/x
  3. Step 3: Cross multiply
    832.70x = 1,149.10 × 459.66
  4. Step 4: Simplify right side
    832.70x = 528,195.31
  5. Step 5: Solve for x
    x = 528,195.31/832.70
  6. Step 6: Final answer
    x = 634.32

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1.5x scale

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.