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Finding the Fourth Proportional to 673.42, 928.72 and 474.30

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Solution

The fourth proportional to 673.42, 928.72 and 474.30 is: 654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.42 : 928.72 = 474.30 : x
  2. Step 2: Convert to fraction form
    673.42/928.72 = 474.30/x
  3. Step 3: Cross multiply
    673.42x = 928.72 × 474.30
  4. Step 4: Simplify right side
    673.42x = 440,491.90
  5. Step 5: Solve for x
    x = 440,491.90/673.42
  6. Step 6: Final answer
    x = 654.11

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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.