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Finding the Fourth Proportional to 357.44, 493.36 and 292.64

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Solution

The fourth proportional to 357.44, 493.36 and 292.64 is: 403.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.44 : 493.36 = 292.64 : x
  2. Step 2: Convert to fraction form
    357.44/493.36 = 292.64/x
  3. Step 3: Cross multiply
    357.44x = 493.36 × 292.64
  4. Step 4: Simplify right side
    357.44x = 144,373.67
  5. Step 5: Solve for x
    x = 144,373.67/357.44
  6. Step 6: Final answer
    x = 403.92

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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.