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Finding the Fourth Proportional to 283.00, 390.58 and 172.46

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Solution

The fourth proportional to 283.00, 390.58 and 172.46 is: 238.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.00 : 390.58 = 172.46 : x
  2. Step 2: Convert to fraction form
    283.00/390.58 = 172.46/x
  3. Step 3: Cross multiply
    283.00x = 390.58 × 172.46
  4. Step 4: Simplify right side
    283.00x = 67,359.54
  5. Step 5: Solve for x
    x = 67,359.54/283.00
  6. Step 6: Final answer
    x = 238.02

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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.