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Finding the Fourth Proportional to 283.01, 390.53 and 172.50

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Solution

The fourth proportional to 283.01, 390.53 and 172.50 is: 238.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.01 : 390.53 = 172.50 : x
  2. Step 2: Convert to fraction form
    283.01/390.53 = 172.50/x
  3. Step 3: Cross multiply
    283.01x = 390.53 × 172.50
  4. Step 4: Simplify right side
    283.01x = 67,365.56
  5. Step 5: Solve for x
    x = 67,365.56/283.01
  6. Step 6: Final answer
    x = 238.04

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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.