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Finding the Fourth Proportional to 464.87, 697.31 and 156.72

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Solution

The fourth proportional to 464.87, 697.31 and 156.72 is: 235.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.87 : 697.31 = 156.72 : x
  2. Step 2: Convert to fraction form
    464.87/697.31 = 156.72/x
  3. Step 3: Cross multiply
    464.87x = 697.31 × 156.72
  4. Step 4: Simplify right side
    464.87x = 109,281.64
  5. Step 5: Solve for x
    x = 109,281.64/464.87
  6. Step 6: Final answer
    x = 235.08

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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.