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Finding the Fourth Proportional to 479.94, 660.30 and 469.02

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Solution

The fourth proportional to 479.94, 660.30 and 469.02 is: 645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.94 : 660.30 = 469.02 : x
  2. Step 2: Convert to fraction form
    479.94/660.30 = 469.02/x
  3. Step 3: Cross multiply
    479.94x = 660.30 × 469.02
  4. Step 4: Simplify right side
    479.94x = 309,693.91
  5. Step 5: Solve for x
    x = 309,693.91/479.94
  6. Step 6: Final answer
    x = 645.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.