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Finding the Fourth Proportional to 878.23, 1,316.40 and 467.56

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Solution

The fourth proportional to 878.23, 1,316.40 and 467.56 is: 700.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.23 : 1,316.40 = 467.56 : x
  2. Step 2: Convert to fraction form
    878.23/1,316.40 = 467.56/x
  3. Step 3: Cross multiply
    878.23x = 1,316.40 × 467.56
  4. Step 4: Simplify right side
    878.23x = 615,495.98
  5. Step 5: Solve for x
    x = 615,495.98/878.23
  6. Step 6: Final answer
    x = 700.84

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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.