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Finding the Fourth Proportional to 673.11, 929.17 and 486.91

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Solution

The fourth proportional to 673.11, 929.17 and 486.91 is: 672.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.11 : 929.17 = 486.91 : x
  2. Step 2: Convert to fraction form
    673.11/929.17 = 486.91/x
  3. Step 3: Cross multiply
    673.11x = 929.17 × 486.91
  4. Step 4: Simplify right side
    673.11x = 452,423.93
  5. Step 5: Solve for x
    x = 452,423.93/673.11
  6. Step 6: Final answer
    x = 672.14

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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.