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Finding the Fourth Proportional to 887.93, 1,331.26 and 339.65

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Solution

The fourth proportional to 887.93, 1,331.26 and 339.65 is: 509.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.93 : 1,331.26 = 339.65 : x
  2. Step 2: Convert to fraction form
    887.93/1,331.26 = 339.65/x
  3. Step 3: Cross multiply
    887.93x = 1,331.26 × 339.65
  4. Step 4: Simplify right side
    887.93x = 452,154.10
  5. Step 5: Solve for x
    x = 452,154.10/887.93
  6. Step 6: Final answer
    x = 509.23

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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.