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Finding the Fourth Proportional to 508.01, 700.20 and 397.28

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Solution

The fourth proportional to 508.01, 700.20 and 397.28 is: 547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.01 : 700.20 = 397.28 : x
  2. Step 2: Convert to fraction form
    508.01/700.20 = 397.28/x
  3. Step 3: Cross multiply
    508.01x = 700.20 × 397.28
  4. Step 4: Simplify right side
    508.01x = 278,171.96
  5. Step 5: Solve for x
    x = 278,171.96/508.01
  6. Step 6: Final answer
    x = 547.58

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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.