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Finding the Fourth Proportional to 543.41, 815.11 and 235.10

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Solution

The fourth proportional to 543.41, 815.11 and 235.10 is: 352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.41 : 815.11 = 235.10 : x
  2. Step 2: Convert to fraction form
    543.41/815.11 = 235.10/x
  3. Step 3: Cross multiply
    543.41x = 815.11 × 235.10
  4. Step 4: Simplify right side
    543.41x = 191,635.13
  5. Step 5: Solve for x
    x = 191,635.13/543.41
  6. Step 6: Final answer
    x = 352.65

Related Problems

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Half scale
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Double scale
Find fourth proportional to 544.41, 816.61 and 236.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.