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Finding the Fourth Proportional to 264.32, 364.80 and 153.81

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Solution

The fourth proportional to 264.32, 364.80 and 153.81 is: 212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.32 : 364.80 = 153.81 : x
  2. Step 2: Convert to fraction form
    264.32/364.80 = 153.81/x
  3. Step 3: Cross multiply
    264.32x = 364.80 × 153.81
  4. Step 4: Simplify right side
    264.32x = 56,109.89
  5. Step 5: Solve for x
    x = 56,109.89/264.32
  6. Step 6: Final answer
    x = 212.28

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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.