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Finding the Fourth Proportional to 673.44, 929.07 and 486.66

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Solution

The fourth proportional to 673.44, 929.07 and 486.66 is: 671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.44 : 929.07 = 486.66 : x
  2. Step 2: Convert to fraction form
    673.44/929.07 = 486.66/x
  3. Step 3: Cross multiply
    673.44x = 929.07 × 486.66
  4. Step 4: Simplify right side
    673.44x = 452,141.21
  5. Step 5: Solve for x
    x = 452,141.21/673.44
  6. Step 6: Final answer
    x = 671.39

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.