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Finding the Fourth Proportional to 357.58, 533.48 and 305.62

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Solution

The fourth proportional to 357.58, 533.48 and 305.62 is: 455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.58 : 533.48 = 305.62 : x
  2. Step 2: Convert to fraction form
    357.58/533.48 = 305.62/x
  3. Step 3: Cross multiply
    357.58x = 533.48 × 305.62
  4. Step 4: Simplify right side
    357.58x = 163,042.16
  5. Step 5: Solve for x
    x = 163,042.16/357.58
  6. Step 6: Final answer
    x = 455.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.