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Finding the Fourth Proportional to 673.02, 928.76 and 393.30

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Solution

The fourth proportional to 673.02, 928.76 and 393.30 is: 542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.02 : 928.76 = 393.30 : x
  2. Step 2: Convert to fraction form
    673.02/928.76 = 393.30/x
  3. Step 3: Cross multiply
    673.02x = 928.76 × 393.30
  4. Step 4: Simplify right side
    673.02x = 365,279.34
  5. Step 5: Solve for x
    x = 365,279.34/673.02
  6. Step 6: Final answer
    x = 542.75

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Double scale
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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.