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Finding the Fourth Proportional to 566.60, 780.42 and 492.92

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Solution

The fourth proportional to 566.60, 780.42 and 492.92 is: 678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.60 : 780.42 = 492.92 : x
  2. Step 2: Convert to fraction form
    566.60/780.42 = 492.92/x
  3. Step 3: Cross multiply
    566.60x = 780.42 × 492.92
  4. Step 4: Simplify right side
    566.60x = 384,684.63
  5. Step 5: Solve for x
    x = 384,684.63/566.60
  6. Step 6: Final answer
    x = 678.94

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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.