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Finding the Fourth Proportional to 674.30, 930.58 and 412.37

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Solution

The fourth proportional to 674.30, 930.58 and 412.37 is: 569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.30 : 930.58 = 412.37 : x
  2. Step 2: Convert to fraction form
    674.30/930.58 = 412.37/x
  3. Step 3: Cross multiply
    674.30x = 930.58 × 412.37
  4. Step 4: Simplify right side
    674.30x = 383,741.08
  5. Step 5: Solve for x
    x = 383,741.08/674.30
  6. Step 6: Final answer
    x = 569.09

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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.