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Finding the Fourth Proportional to 487.66, 673.24 and 374.72

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Solution

The fourth proportional to 487.66, 673.24 and 374.72 is: 517.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.66 : 673.24 = 374.72 : x
  2. Step 2: Convert to fraction form
    487.66/673.24 = 374.72/x
  3. Step 3: Cross multiply
    487.66x = 673.24 × 374.72
  4. Step 4: Simplify right side
    487.66x = 252,276.49
  5. Step 5: Solve for x
    x = 252,276.49/487.66
  6. Step 6: Final answer
    x = 517.32

Related Problems

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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.