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Finding the Fourth Proportional to 470.59, 702 and 394.04

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Solution

The fourth proportional to 470.59, 702 and 394.04 is: 587.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.59 : 702 = 394.04 : x
  2. Step 2: Convert to fraction form
    470.59/702 = 394.04/x
  3. Step 3: Cross multiply
    470.59x = 702 × 394.04
  4. Step 4: Simplify right side
    470.59x = 276,617.84
  5. Step 5: Solve for x
    x = 276,617.84/470.59
  6. Step 6: Final answer
    x = 587.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.