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Finding the Fourth Proportional to 493.61, 740.42 and 346.76

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Solution

The fourth proportional to 493.61, 740.42 and 346.76 is: 520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.61 : 740.42 = 346.76 : x
  2. Step 2: Convert to fraction form
    493.61/740.42 = 346.76/x
  3. Step 3: Cross multiply
    493.61x = 740.42 × 346.76
  4. Step 4: Simplify right side
    493.61x = 256,747.06
  5. Step 5: Solve for x
    x = 256,747.06/493.61
  6. Step 6: Final answer
    x = 520.14

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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.