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Finding the Fourth Proportional to 464.79, 697.29 and 140.16

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Solution

The fourth proportional to 464.79, 697.29 and 140.16 is: 210.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.79 : 697.29 = 140.16 : x
  2. Step 2: Convert to fraction form
    464.79/697.29 = 140.16/x
  3. Step 3: Cross multiply
    464.79x = 697.29 × 140.16
  4. Step 4: Simplify right side
    464.79x = 97,732.17
  5. Step 5: Solve for x
    x = 97,732.17/464.79
  6. Step 6: Final answer
    x = 210.27

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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.