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Finding the Fourth Proportional to 485.32, 670.18 and 467.48

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Solution

The fourth proportional to 485.32, 670.18 and 467.48 is: 645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.32 : 670.18 = 467.48 : x
  2. Step 2: Convert to fraction form
    485.32/670.18 = 467.48/x
  3. Step 3: Cross multiply
    485.32x = 670.18 × 467.48
  4. Step 4: Simplify right side
    485.32x = 313,295.75
  5. Step 5: Solve for x
    x = 313,295.75/485.32
  6. Step 6: Final answer
    x = 645.54

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.