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Finding the Fourth Proportional to 501.02, 751.08 and 257.02

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Solution

The fourth proportional to 501.02, 751.08 and 257.02 is: 385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.02 : 751.08 = 257.02 : x
  2. Step 2: Convert to fraction form
    501.02/751.08 = 257.02/x
  3. Step 3: Cross multiply
    501.02x = 751.08 × 257.02
  4. Step 4: Simplify right side
    501.02x = 193,042.58
  5. Step 5: Solve for x
    x = 193,042.58/501.02
  6. Step 6: Final answer
    x = 385.30

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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.