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Finding the Fourth Proportional to 684.57, 1,026.15 and 376.10

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Solution

The fourth proportional to 684.57, 1,026.15 and 376.10 is: 563.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.57 : 1,026.15 = 376.10 : x
  2. Step 2: Convert to fraction form
    684.57/1,026.15 = 376.10/x
  3. Step 3: Cross multiply
    684.57x = 1,026.15 × 376.10
  4. Step 4: Simplify right side
    684.57x = 385,935.02
  5. Step 5: Solve for x
    x = 385,935.02/684.57
  6. Step 6: Final answer
    x = 563.76

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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.