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Finding the Fourth Proportional to 572.60, 790.00 and 498.79

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Solution

The fourth proportional to 572.60, 790.00 and 498.79 is: 688.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.60 : 790.00 = 498.79 : x
  2. Step 2: Convert to fraction form
    572.60/790.00 = 498.79/x
  3. Step 3: Cross multiply
    572.60x = 790.00 × 498.79
  4. Step 4: Simplify right side
    572.60x = 394,046.65
  5. Step 5: Solve for x
    x = 394,046.65/572.60
  6. Step 6: Final answer
    x = 688.17

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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.