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Finding the Fourth Proportional to 466.69, 643.93 and 270.20

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Solution

The fourth proportional to 466.69, 643.93 and 270.20 is: 372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.69 : 643.93 = 270.20 : x
  2. Step 2: Convert to fraction form
    466.69/643.93 = 270.20/x
  3. Step 3: Cross multiply
    466.69x = 643.93 × 270.20
  4. Step 4: Simplify right side
    466.69x = 173,985.99
  5. Step 5: Solve for x
    x = 173,985.99/466.69
  6. Step 6: Final answer
    x = 372.81

Related Problems

Find fourth proportional to 233.34, 321.96 and 135.10
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.