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Finding the Fourth Proportional to 673.47, 928.94 and 411.03

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Solution

The fourth proportional to 673.47, 928.94 and 411.03 is: 566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.47 : 928.94 = 411.03 : x
  2. Step 2: Convert to fraction form
    673.47/928.94 = 411.03/x
  3. Step 3: Cross multiply
    673.47x = 928.94 × 411.03
  4. Step 4: Simplify right side
    673.47x = 381,820.15
  5. Step 5: Solve for x
    x = 381,820.15/673.47
  6. Step 6: Final answer
    x = 566.94

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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.