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Finding the Fourth Proportional to 632.41, 947.89 and 285.22

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Solution

The fourth proportional to 632.41, 947.89 and 285.22 is: 427.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.41 : 947.89 = 285.22 : x
  2. Step 2: Convert to fraction form
    632.41/947.89 = 285.22/x
  3. Step 3: Cross multiply
    632.41x = 947.89 × 285.22
  4. Step 4: Simplify right side
    632.41x = 270,354.10
  5. Step 5: Solve for x
    x = 270,354.10/632.41
  6. Step 6: Final answer
    x = 427.50

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.