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Finding the Fourth Proportional to 493.35, 740.78 and 401.16

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Solution

The fourth proportional to 493.35, 740.78 and 401.16 is: 602.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.35 : 740.78 = 401.16 : x
  2. Step 2: Convert to fraction form
    493.35/740.78 = 401.16/x
  3. Step 3: Cross multiply
    493.35x = 740.78 × 401.16
  4. Step 4: Simplify right side
    493.35x = 297,173.58
  5. Step 5: Solve for x
    x = 297,173.58/493.35
  6. Step 6: Final answer
    x = 602.36

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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.