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Finding the Fourth Proportional to 478.65, 718.11 and 154.01

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Solution

The fourth proportional to 478.65, 718.11 and 154.01 is: 231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.65 : 718.11 = 154.01 : x
  2. Step 2: Convert to fraction form
    478.65/718.11 = 154.01/x
  3. Step 3: Cross multiply
    478.65x = 718.11 × 154.01
  4. Step 4: Simplify right side
    478.65x = 110,592.53
  5. Step 5: Solve for x
    x = 110,592.53/478.65
  6. Step 6: Final answer
    x = 231.05

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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.