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Finding the Fourth Proportional to 457.45, 630.54 and 357.69

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Solution

The fourth proportional to 457.45, 630.54 and 357.69 is: 493.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.45 : 630.54 = 357.69 : x
  2. Step 2: Convert to fraction form
    457.45/630.54 = 357.69/x
  3. Step 3: Cross multiply
    457.45x = 630.54 × 357.69
  4. Step 4: Simplify right side
    457.45x = 225,539.19
  5. Step 5: Solve for x
    x = 225,539.19/457.45
  6. Step 6: Final answer
    x = 493.03

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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.