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Finding the Fourth Proportional to 435.42, 651.98 and 305.58

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Solution

The fourth proportional to 435.42, 651.98 and 305.58 is: 457.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.42 : 651.98 = 305.58 : x
  2. Step 2: Convert to fraction form
    435.42/651.98 = 305.58/x
  3. Step 3: Cross multiply
    435.42x = 651.98 × 305.58
  4. Step 4: Simplify right side
    435.42x = 199,227.26
  5. Step 5: Solve for x
    x = 199,227.26/435.42
  6. Step 6: Final answer
    x = 457.56

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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.