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Finding the Fourth Proportional to 619.15, 927.37 and 526.81

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Solution

The fourth proportional to 619.15, 927.37 and 526.81 is: 789.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.15 : 927.37 = 526.81 : x
  2. Step 2: Convert to fraction form
    619.15/927.37 = 526.81/x
  3. Step 3: Cross multiply
    619.15x = 927.37 × 526.81
  4. Step 4: Simplify right side
    619.15x = 488,547.79
  5. Step 5: Solve for x
    x = 488,547.79/619.15
  6. Step 6: Final answer
    x = 789.06

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Why These Related Problems?

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