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Finding the Fourth Proportional to 673.03, 928.47 and 449.07

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Solution

The fourth proportional to 673.03, 928.47 and 449.07 is: 619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.03 : 928.47 = 449.07 : x
  2. Step 2: Convert to fraction form
    673.03/928.47 = 449.07/x
  3. Step 3: Cross multiply
    673.03x = 928.47 × 449.07
  4. Step 4: Simplify right side
    673.03x = 416,947.16
  5. Step 5: Solve for x
    x = 416,947.16/673.03
  6. Step 6: Final answer
    x = 619.51

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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.