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Finding the Fourth Proportional to 673.36, 928.93 and 449.08

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Solution

The fourth proportional to 673.36, 928.93 and 449.08 is: 619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.36 : 928.93 = 449.08 : x
  2. Step 2: Convert to fraction form
    673.36/928.93 = 449.08/x
  3. Step 3: Cross multiply
    673.36x = 928.93 × 449.08
  4. Step 4: Simplify right side
    673.36x = 417,160.36
  5. Step 5: Solve for x
    x = 417,160.36/673.36
  6. Step 6: Final answer
    x = 619.53

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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.