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Finding the Fourth Proportional to 435.01, 651.64 and 261.58

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Solution

The fourth proportional to 435.01, 651.64 and 261.58 is: 391.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.01 : 651.64 = 261.58 : x
  2. Step 2: Convert to fraction form
    435.01/651.64 = 261.58/x
  3. Step 3: Cross multiply
    435.01x = 651.64 × 261.58
  4. Step 4: Simplify right side
    435.01x = 170,454.12
  5. Step 5: Solve for x
    x = 170,454.12/435.01
  6. Step 6: Final answer
    x = 391.84

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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.