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Finding the Fourth Proportional to 673.06, 928.82 and 378.32

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Solution

The fourth proportional to 673.06, 928.82 and 378.32 is: 522.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.06 : 928.82 = 378.32 : x
  2. Step 2: Convert to fraction form
    673.06/928.82 = 378.32/x
  3. Step 3: Cross multiply
    673.06x = 928.82 × 378.32
  4. Step 4: Simplify right side
    673.06x = 351,391.61
  5. Step 5: Solve for x
    x = 351,391.61/673.06
  6. Step 6: Final answer
    x = 522.08

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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.