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Finding the Fourth Proportional to 464.91, 697.40 and 140.30

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Solution

The fourth proportional to 464.91, 697.40 and 140.30 is: 210.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.91 : 697.40 = 140.30 : x
  2. Step 2: Convert to fraction form
    464.91/697.40 = 140.30/x
  3. Step 3: Cross multiply
    464.91x = 697.40 × 140.30
  4. Step 4: Simplify right side
    464.91x = 97,845.22
  5. Step 5: Solve for x
    x = 97,845.22/464.91
  6. Step 6: Final answer
    x = 210.46

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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.