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Finding the Fourth Proportional to 465.71, 698.61 and 157.55

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Solution

The fourth proportional to 465.71, 698.61 and 157.55 is: 236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.71 : 698.61 = 157.55 : x
  2. Step 2: Convert to fraction form
    465.71/698.61 = 157.55/x
  3. Step 3: Cross multiply
    465.71x = 698.61 × 157.55
  4. Step 4: Simplify right side
    465.71x = 110,066.01
  5. Step 5: Solve for x
    x = 110,066.01/465.71
  6. Step 6: Final answer
    x = 236.34

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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.