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Finding the Fourth Proportional to 285.01, 427.52 and 188.13

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Solution

The fourth proportional to 285.01, 427.52 and 188.13 is: 282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.01 : 427.52 = 188.13 : x
  2. Step 2: Convert to fraction form
    285.01/427.52 = 188.13/x
  3. Step 3: Cross multiply
    285.01x = 427.52 × 188.13
  4. Step 4: Simplify right side
    285.01x = 80,428.40
  5. Step 5: Solve for x
    x = 80,428.40/285.01
  6. Step 6: Final answer
    x = 282.20

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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.