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Finding the Fourth Proportional to 478, 718.62 and 334.72

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Solution

The fourth proportional to 478, 718.62 and 334.72 is: 503.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478 : 718.62 = 334.72 : x
  2. Step 2: Convert to fraction form
    478/718.62 = 334.72/x
  3. Step 3: Cross multiply
    478x = 718.62 × 334.72
  4. Step 4: Simplify right side
    478x = 240,536.49
  5. Step 5: Solve for x
    x = 240,536.49/478
  6. Step 6: Final answer
    x = 503.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.